A new technology which dramatically improves the sensitivity of Magnetic Resonance techniques including those used in hospital scanners and chemistry laboratories has been developed by scientists at the University of York.
Ultimately, the technique, based on manipulating parahydrogen, the fuel of the space shuttle, is expected to allow doctors to learn far more about a patient’s condition from an MRI scan at lower cost while increasing the range of medical conditions that can be examined.
The research is published today in the latest edition of the journal Science.
"Our method has the potential to help doctors make faster and more accurate diagnoses in a wide range of medical conditions"
Professor Gary Green
Researchers have taken parahydrogen and, through a reversible interaction with a specially designed molecular scaffold, transferred its magnetism to a range of molecules. The resulting molecules are much more easily detected than was previously possible. No-one has been able to use parahydrogen in this way before.
Professor Gary Green, from the Department of Psychology and Director of the York Neuroimaging Centre, said: "Our method has the potential to help doctors make faster and more accurate diagnoses in a wide range of medical conditions.
source: University of York
3.28.2009
Siemens Demonstrates Flash Speed, Lowest Dose at ACC 2009
Orlando, Fla., March 26, 2009 – Siemens Healthcare (www.usa.siemens.com/healthcare) demonstrates the fastest speed and lowest dose for cardiac applications with the SOMATOM® Definition Flash dual source computed tomography (CT) scanner at the 58th Annual Scientific Session of the American College of Cardiology (ACC) from March 29-31 in Orlando, Fla., at booth #1842. Siemens CT covers the entire spectrum of cardiology, from early detection to acute care through follow-up.
“The SOMATOM Definition Flash requires only a fraction of the radiation dose that systems previously required to scan even the tiniest anatomical details faster than ever before,” said Kulin Hemani, vice president, CT, Siemens Medical Solutions USA, Inc. “Scanning the thorax, including the heart, can be done in only 0.6 seconds, taking the burden of breath-holding off the patient and allowing functional imaging for body regions up to 48 cm.”
source: Siemens Medical
“The SOMATOM Definition Flash requires only a fraction of the radiation dose that systems previously required to scan even the tiniest anatomical details faster than ever before,” said Kulin Hemani, vice president, CT, Siemens Medical Solutions USA, Inc. “Scanning the thorax, including the heart, can be done in only 0.6 seconds, taking the burden of breath-holding off the patient and allowing functional imaging for body regions up to 48 cm.”
source: Siemens Medical
3.18.2009
Increasing Use Of CT On Pregnant Women Tracked By Study
Researchers have found that over a 10-year period radiologic exams on pregnant women have more than doubled, according to a study published in the online edition of Radiology.
"Imaging utilization has not been previously studied in the pregnant population," said Elizabeth Lazarus, M.D., assistant professor of diagnostic imaging at the Warren Alpert School of Medicine at Brown University and a radiologist at Rhode Island Hospital in Providence, R.I. "This population may be vulnerable to the adverse effects of radiation."
Dr. Lazarus and colleagues conducted a retrospective review of nuclear medicine, CT, fluoroscopy and plain-film x-ray imaging examinations performed at Rhode Island Hospital and Women and Infants' Hospital from 1997 through 2006 to determine how often these imaging exams were performed on pregnant women and the estimated radiation dose to the fetus. Data were then compared to the number of infant deliveries per year for that same time period.
source: EurekAlert
"Imaging utilization has not been previously studied in the pregnant population," said Elizabeth Lazarus, M.D., assistant professor of diagnostic imaging at the Warren Alpert School of Medicine at Brown University and a radiologist at Rhode Island Hospital in Providence, R.I. "This population may be vulnerable to the adverse effects of radiation."
Dr. Lazarus and colleagues conducted a retrospective review of nuclear medicine, CT, fluoroscopy and plain-film x-ray imaging examinations performed at Rhode Island Hospital and Women and Infants' Hospital from 1997 through 2006 to determine how often these imaging exams were performed on pregnant women and the estimated radiation dose to the fetus. Data were then compared to the number of infant deliveries per year for that same time period.
source: EurekAlert
3.11.2009
New KODAK 9500 Cone Beam 3D System Redefines CT Design, Ease-of-Use
VIENNA, March 6 — The KODAK 9500 Cone Beam 3D System was introduced by Carestream Health, Inc., for easy-to-use three-dimensional imaging of cranio-maxillofacial anatomy. Built on the proven and reliable KODAK 9000 platform, the KODAK 9500 3D System enables users to quickly produce magnificent 3D images, ranging from dual jaw to full craniofacial images, more affordably and at a lower dose than traditional medical CT systems.
The KODAK 9500 3D System is well suited for radiology facilities providing cranio-maxillofacial imaging services to dental professionals and medical specialists. With high-quality, anatomically-correct 3D images down to 0.2 mm voxel (VOlume piXEL) size, users are able to leverage the incredible image detail of 3D to provide more accurate diagnoses, improved treatment planning and more efficient patient care.
Image output occurs in DICOM formats, supporting flexible output options including customizable report templates, PACS and medical printer connections. The 3D volumes produced by the KODAK 9500 System can be exported to any other DICOM-compatible software.
source: Carestream Health
The KODAK 9500 3D System is well suited for radiology facilities providing cranio-maxillofacial imaging services to dental professionals and medical specialists. With high-quality, anatomically-correct 3D images down to 0.2 mm voxel (VOlume piXEL) size, users are able to leverage the incredible image detail of 3D to provide more accurate diagnoses, improved treatment planning and more efficient patient care.
Image output occurs in DICOM formats, supporting flexible output options including customizable report templates, PACS and medical printer connections. The 3D volumes produced by the KODAK 9500 System can be exported to any other DICOM-compatible software.
source: Carestream Health
3.10.2009
Siemens Combines Vision and Value with 16-Slice Biograph TruePoint PET•CT System
State-of-the-art design offers affordable access to high-quality imaging
Hoffman Estates, Ill., March 6, 2009 – Siemens expands is imaging portfolio with the addition of the Biograph® TruePoint 16-slice PET•CT* imager. The Biograph TruePoint PET•CT imaging family is the first portfolio of imaging systems to include High-Definition PET•CT and now expands its offering with 16-slice CT capabilities. The Biograph TruePoint 16-slice PET•CT will be highlighted this week at the European Congress of Radiology, March 6-10, in Vienna, Austria.
”The introduction of this particular system is critical as we continue to search for the balance between innovation and access. The likelihood that universal adoption of PET•CT technology will increase with accessibility is a shared industry vision. As an industry leader, it is our responsibility to make that vision more readily attainable,” said Michael Reitermann, CEO, Molecular Imaging, Siemens Healthcare. “The Biograph TruePoint 16-slice PET•CT is a means to achieve that end, with high performance technology housed in an economical package.”
source: Siemens Healthcare
Hoffman Estates, Ill., March 6, 2009 – Siemens expands is imaging portfolio with the addition of the Biograph® TruePoint 16-slice PET•CT* imager. The Biograph TruePoint PET•CT imaging family is the first portfolio of imaging systems to include High-Definition PET•CT and now expands its offering with 16-slice CT capabilities. The Biograph TruePoint 16-slice PET•CT will be highlighted this week at the European Congress of Radiology, March 6-10, in Vienna, Austria.
”The introduction of this particular system is critical as we continue to search for the balance between innovation and access. The likelihood that universal adoption of PET•CT technology will increase with accessibility is a shared industry vision. As an industry leader, it is our responsibility to make that vision more readily attainable,” said Michael Reitermann, CEO, Molecular Imaging, Siemens Healthcare. “The Biograph TruePoint 16-slice PET•CT is a means to achieve that end, with high performance technology housed in an economical package.”
source: Siemens Healthcare
3.06.2009
FDA Warns About Risk of Wearing Medicated Patches During MRIs
Certain adhesive patches that deliver medication through the skin have been found to be a risk to patient safety. The patches, if worn while undergoing magnetic resonance imaging scans or MRIs, can cause skin burns, says the U.S. Food and Drug Administration today.
The patches of concern include both brand name and generic products and patches purchased over the counter without a prescription.
The FDA issued the Public Health Advisory on transdermal drug patches after learning that a warning was missing on some patches that contain aluminum or other metals in their non-adhesive backing. The backing is the portion of the patch not in direct contact with the skin. While not attracted to the magnetic field of the MRI, the metal can conduct electricity, generating heat which can cause burns. Users of the patches reported receiving skin burns at their patch site when wearing the patch during an MRI scan.
source: U.S. Food and Drug Administration
The patches of concern include both brand name and generic products and patches purchased over the counter without a prescription.
The FDA issued the Public Health Advisory on transdermal drug patches after learning that a warning was missing on some patches that contain aluminum or other metals in their non-adhesive backing. The backing is the portion of the patch not in direct contact with the skin. While not attracted to the magnetic field of the MRI, the metal can conduct electricity, generating heat which can cause burns. Users of the patches reported receiving skin burns at their patch site when wearing the patch during an MRI scan.
source: U.S. Food and Drug Administration
3.01.2009
Neuisys Announces FDA Clearance of NeuViz 16 Multi-Slice CT System
GREENSBORO, N.C., Feb. 23 /PRNewswire/ -- Neuisys Imaging System Solutions, LLC announced today that the U.S. Food and Drug Administration (FDA) has granted 510(k) clearance of the NeuViz 16 Multi-Slice Computed Tomography (CT) System. The NeuViz 16 is developed by Philips Neusoft Medical Systems, a joint venture between Royal Philips Electronics of the Netherlands and Neusoft Corporation of China.
"The NeuViz 16 is a state-of-the-art CT system that provides superior performance for the price and provides the clinical benefits of routine, sub-millimeter resolution, volume imaging and low-dose protocols," said Kim Russell, Neuisys president and chief executive officer. "The NeuViz 16 packs a tremendous amount of technology into a very economical footprint and is the perfect solution for diagnostic imaging centers and community hospitals that plan to upgrade from older single or multi-slice CT systems to 16-slice CT as well as a wide array of specialist physician groups considering in-office CT including urologists, gastroenterologists, pulmonologists, surgeons, and oncologists."
source: PR Newswire
"The NeuViz 16 is a state-of-the-art CT system that provides superior performance for the price and provides the clinical benefits of routine, sub-millimeter resolution, volume imaging and low-dose protocols," said Kim Russell, Neuisys president and chief executive officer. "The NeuViz 16 packs a tremendous amount of technology into a very economical footprint and is the perfect solution for diagnostic imaging centers and community hospitals that plan to upgrade from older single or multi-slice CT systems to 16-slice CT as well as a wide array of specialist physician groups considering in-office CT including urologists, gastroenterologists, pulmonologists, surgeons, and oncologists."
source: PR Newswire
2.23.2009
Demand pushes MRI wait up to a year (Canada)
LISA PRIEST
Waits for MRI scans in Ontario - used to diagnose multiple sclerosis, cancer, and chronic back pain - are startlingly long, with at least one hospital reporting a queue of almost one year.
The province's targeted waiting time for the lowest priority scan - such as those with chronic back or knee pain - is 28 days. But the waiting time is 100 days, which means 90 per cent of all patients receive their scan within that time period, with the remaining 10 per cent waiting longer.
The range in waits throughout the province is dramatic: At Bluewater Health in Sarnia, Ont., 90 per cent of patients had their scans done within 17 days. At The Ottawa Hospital, which has the longest waiting times, that number is 360.
This is according to data from October to December, 2008, the latest available.
source: Globe and Mail
Waits for MRI scans in Ontario - used to diagnose multiple sclerosis, cancer, and chronic back pain - are startlingly long, with at least one hospital reporting a queue of almost one year.
The province's targeted waiting time for the lowest priority scan - such as those with chronic back or knee pain - is 28 days. But the waiting time is 100 days, which means 90 per cent of all patients receive their scan within that time period, with the remaining 10 per cent waiting longer.
The range in waits throughout the province is dramatic: At Bluewater Health in Sarnia, Ont., 90 per cent of patients had their scans done within 17 days. At The Ottawa Hospital, which has the longest waiting times, that number is 360.
This is according to data from October to December, 2008, the latest available.
source: Globe and Mail
2.19.2009
MRI Accidents Report 270% Increase Over 4 Years. Available Solutions Must Be Deployed
According to the United States Food and Drug Administration (FDA), 2008 saw a 30% increase in the number of reported MRI accidents. In the four years following 2004, the FDA's MAUDE database catalogues a 270% increase in MRI accidents. But what may be even more troubling than the dramatic increase in reported accidents are the numbers that aren't included in the FDA's data.
The extreme power of the magnets used for MRI imaging (typically tens-of-thousands of times greater than our exposure to the Earth's own magnetic field) can readily 'pull' ferromagnetic materials to the scanner, sometimes with lethal results. These types of accidents, frequently referred to as 'projectile' or 'missile' accidents, are the most common MRI mishap and yet comprise a slim minority of the FDA's accident reports.
source: Medical News Today
The extreme power of the magnets used for MRI imaging (typically tens-of-thousands of times greater than our exposure to the Earth's own magnetic field) can readily 'pull' ferromagnetic materials to the scanner, sometimes with lethal results. These types of accidents, frequently referred to as 'projectile' or 'missile' accidents, are the most common MRI mishap and yet comprise a slim minority of the FDA's accident reports.
source: Medical News Today
2.18.2009
GE Healthcare Installs First Series of Breakthrough Molecular Imaging Scanners Globally
WAUKESHA, Wis.--(BUSINESS WIRE)--GE Healthcare, a unit of General Electric Company (NYSE:GE), announced the global installation of the new DiscoveryTM PET/CT 600-series scanners, designed to help enable earlier detection and accurate monitoring of disease combined with the latest advancements in molecular imaging technology to explore the development of future applications. The first clinical installs will be completed at Miami Baptist Hospital in Florida, University Hospital of Bichat in Paris, France, Queensland X-Ray at the Mater Hospital in Brisbane, Australia, Duke University Medical Center in North Carolina, and Mayo Clinic in Minnesota.
“This first set of installations is a big step forward in the diagnosis and monitoring of disease,” said Terri Bresenham, newly appointed vice president and general manager of the company’s global Molecular Imaging business. “Partnering with clinics in the United States, Europe and the Asia/Pacific Region, we will be able to reach more patients globally with the latest advancements in oncology, neurology, and cardiovascular technologies.”
The new PET/CT platform, from GE Healthcare, was built for physicians and molecular imaging researchers in mind, based on their need for more power to explore the potential of PET/CT imaging that includes better PET quantitative accuracy. This new line of PET/CT scanners, combine advanced molecular imaging tools with the large coverage low dose Volume CT helping allow for earlier diagnosis, more accurate tumor location and better assessment of how a patient is responding to cancer treatment. Although mostly for use in oncology, PET/CT can also be used for assisting the diagnosis of cardiovascular disease and neurological conditions.
source: BusinessWire
“This first set of installations is a big step forward in the diagnosis and monitoring of disease,” said Terri Bresenham, newly appointed vice president and general manager of the company’s global Molecular Imaging business. “Partnering with clinics in the United States, Europe and the Asia/Pacific Region, we will be able to reach more patients globally with the latest advancements in oncology, neurology, and cardiovascular technologies.”
The new PET/CT platform, from GE Healthcare, was built for physicians and molecular imaging researchers in mind, based on their need for more power to explore the potential of PET/CT imaging that includes better PET quantitative accuracy. This new line of PET/CT scanners, combine advanced molecular imaging tools with the large coverage low dose Volume CT helping allow for earlier diagnosis, more accurate tumor location and better assessment of how a patient is responding to cancer treatment. Although mostly for use in oncology, PET/CT can also be used for assisting the diagnosis of cardiovascular disease and neurological conditions.
source: BusinessWire
2.17.2009
Toshiba Introduces the Aquilion Premium
TUSTIN, California — February 12, 2009 — Toshiba America Medical Systems, Inc. announced the launch of the Aquilion® Premium CT system. The Aquilion Premium rounds out the company's CT portfolio to include a product with the capability to cover up to 8 cm in a single rotation. This system is also field-upgradeable to an Aquilion ONE.
"As part of our continued commitment to providing the right technology mix for the medical community, our customers have asked for a system that allows them to easily upgrade to the Aquilion ONE," said Doug Ryan, senior director, CT Business Unit. "Just as we developed upgrade paths with our Aquilion 8-detector row and 32-detector row products, we are providing the same consumer focused capability with the Aquilion Premium product."
Because the system is field-upgradeable to an Aquilion ONE, this product enables the medical community to have access to advanced technology today, while allowing physicians and administrators to plan for their future needs.
Shipments of Aquilion Premium will begin in the second quarter of 2009.
source: Toshiba
"As part of our continued commitment to providing the right technology mix for the medical community, our customers have asked for a system that allows them to easily upgrade to the Aquilion ONE," said Doug Ryan, senior director, CT Business Unit. "Just as we developed upgrade paths with our Aquilion 8-detector row and 32-detector row products, we are providing the same consumer focused capability with the Aquilion Premium product."
Because the system is field-upgradeable to an Aquilion ONE, this product enables the medical community to have access to advanced technology today, while allowing physicians and administrators to plan for their future needs.
Shipments of Aquilion Premium will begin in the second quarter of 2009.
source: Toshiba
2.15.2009
Medicare | CMS Announces Tentative Decision To End Medicare Coverage for Virtual Colonoscopies
CMS on Thursday 2/12/09 announced a tentative decision to end Medicare coverage for virtual colonoscopies, or CT colonographies, the New York Times reports. "Controversy has swirled for years" about whether virtual colonoscopies, which use X-ray images and computer software to create images of the colon, are as effective as traditional colonoscopies, which use a small camera that is passed through the colon, according to the Times.
According to a notice published on the CMS Web site, an analysis conducted by the agency found "insufficient evidence" to conclude that virtual colonoscopies "improve outcomes in Medicare beneficiaries." The analysis found that virtual colonoscopies are as effective as traditional colonoscopies in the detection of larger polyps but less effective in the detection of smaller polyps.
source: Kaisernetwork,org
According to a notice published on the CMS Web site, an analysis conducted by the agency found "insufficient evidence" to conclude that virtual colonoscopies "improve outcomes in Medicare beneficiaries." The analysis found that virtual colonoscopies are as effective as traditional colonoscopies in the detection of larger polyps but less effective in the detection of smaller polyps.
source: Kaisernetwork,org
2.13.2009
MRI Gradient Artifact Removal for ECG and EMG
BIOPAC announces a new method to remove gradient artifact from physiological data recorded inside a functional MRI. The new technique allows researchers to record ECG, heart rate and R-R interval data from a subject while the MRI is taking images. The same technique also significantly improves the quality of EMG data.
The new techniques allow researchers to record physiological data from a subject in the MRI. The brain is scanned while the subject receives a combination of visual, auditory, somatosensory, and electrical stimulation. The stimulation activates different regions of the brain and allows researchers to image the brain while the brain responds to the stimuli. The physiological data, stimulation and MRI images are all highly synchronized. This allows researchers to compare physiological responses and images to precise stimuli.
BIOPAC has a range of MRI products to record almost every physiological signal from inside the scanner. A range of isolated and filtered MRI cables provide the conduit between the subject in the scanner and the MP150/MP100 data acquisition systems and amplifiers that are located in the control room. BIOPAC MRI-compatible electrodes and MRI-compatible transducers connect to the filter cables and the subject.
source: BIOPAC
The new techniques allow researchers to record physiological data from a subject in the MRI. The brain is scanned while the subject receives a combination of visual, auditory, somatosensory, and electrical stimulation. The stimulation activates different regions of the brain and allows researchers to image the brain while the brain responds to the stimuli. The physiological data, stimulation and MRI images are all highly synchronized. This allows researchers to compare physiological responses and images to precise stimuli.
BIOPAC has a range of MRI products to record almost every physiological signal from inside the scanner. A range of isolated and filtered MRI cables provide the conduit between the subject in the scanner and the MP150/MP100 data acquisition systems and amplifiers that are located in the control room. BIOPAC MRI-compatible electrodes and MRI-compatible transducers connect to the filter cables and the subject.
source: BIOPAC
2.10.2009
MRI shows brain atrophy pattern that predicts Alzheimer's
OAK BROOK, Ill. – Using special MRI methods, researchers have identified a pattern of regional brain atrophy in patients with mild cognitive impairment (MCI) that indicates a greater likelihood of progression to Alzheimer's disease. The findings are published in the online edition of Radiology.
"Previously, this pattern has been observed only after a diagnosis of probable Alzheimer's disease," said the study's lead author, Linda K. McEvoy, Ph.D., assistant project scientist in the Department of Radiology at the University of California San Diego School of Medicine in La Jolla. "Our results show that some individuals with MCI have the atrophy pattern characteristic of mild Alzheimer's disease, and these people are at higher risk of experiencing a faster rate of brain degeneration and a faster decline to dementia than individuals with MCI who do not show that atrophy pattern."
According to the Alzheimer's Association, more than five million Americans currently have Alzheimer's disease. One of the goals of modern neuroimaging is to help in early and accurate diagnosis, which can be challenging. There is no cure for Alzheimer's disease, but when it is diagnosed early, drug treatment may help improve or stabilize patient symptoms.
source: Eurekalert
"Previously, this pattern has been observed only after a diagnosis of probable Alzheimer's disease," said the study's lead author, Linda K. McEvoy, Ph.D., assistant project scientist in the Department of Radiology at the University of California San Diego School of Medicine in La Jolla. "Our results show that some individuals with MCI have the atrophy pattern characteristic of mild Alzheimer's disease, and these people are at higher risk of experiencing a faster rate of brain degeneration and a faster decline to dementia than individuals with MCI who do not show that atrophy pattern."
According to the Alzheimer's Association, more than five million Americans currently have Alzheimer's disease. One of the goals of modern neuroimaging is to help in early and accurate diagnosis, which can be challenging. There is no cure for Alzheimer's disease, but when it is diagnosed early, drug treatment may help improve or stabilize patient symptoms.
source: Eurekalert
2.09.2009
MEDRAD Sponsors PET Research with University of Zurich
WARRENDALE, Pa., January 6, 2009 – MEDRAD, Inc., has signed a research agreement with the University of Zurich to study dynamic PET imaging with the MEDRAD Intego™ PET Infusion System. The researchers will utilize MEDRAD’s latest technology to more precisely control the radioactive dose delivered during PET imaging procedures.
Specifically, the study will examine patients with tumors in the chest or abdomen and compare standard quantitative techniques, such as standard uptake value (SUV), with more advanced kinetic and compartmental models. One of the primary goals of the research is to explore how controlled delivery technology can enable dynamic imaging by providing additional clinical utility and making these advanced techniques more practical. By enabling the benefit of repeatable infusion of the prescribed FDG dose to all subjects in the study, the Intego System is a key element in the research.
source: MEDRAD
Specifically, the study will examine patients with tumors in the chest or abdomen and compare standard quantitative techniques, such as standard uptake value (SUV), with more advanced kinetic and compartmental models. One of the primary goals of the research is to explore how controlled delivery technology can enable dynamic imaging by providing additional clinical utility and making these advanced techniques more practical. By enabling the benefit of repeatable infusion of the prescribed FDG dose to all subjects in the study, the Intego System is a key element in the research.
source: MEDRAD
2.08.2009
Use Of Magnetic Resonance Imaging Improves Diagnosis Of Patients In Vegetative State
ScienceDaily (Jan. 29, 2009) — A study led by researchers from Catalonia analyses the importance of the use of magnetic resonance imaging to improve the diagnosis and treatment of patients in a vegetative state. Until now these tests have not been performed in this type of patient. The results show activation of the auditory and linguistic areas of the brain despite the absence of observable behavioural responses.
The aim of this study is “to analyse the response of the brain to language in a group of traumatised patients in a vegetative state or in a minimally responsive state”. The patients were examined using the technique of functional magnetic resonance imaging”, explains Carme Junqué to SINC, who is the principal researcher of the project at the University of Barcelona (UB) in collaboration with the University Institute of Neurorehabilitation in Guttman.
source: Science Daily (press release)
The aim of this study is “to analyse the response of the brain to language in a group of traumatised patients in a vegetative state or in a minimally responsive state”. The patients were examined using the technique of functional magnetic resonance imaging”, explains Carme Junqué to SINC, who is the principal researcher of the project at the University of Barcelona (UB) in collaboration with the University Institute of Neurorehabilitation in Guttman.
source: Science Daily (press release)
2.07.2009
CT Scans of the Heart Can Be Done with Low Radiation Dose
February 4, 2009 (updated) -- Physicians are able to perform high-quality CT angiograms of the heart with minimal radiation exposure, according to a study published in today's Journal of the American Medical Association (JAMA). Using dose-reduction strategies, some centers included in this study, dubbed PROTECTION I, were able to perform a 64-slice CT angiogram with a measured radiation exposure of 2.1 mSv (millisieverts), equivalent to the level of normal annual background radiation encountered by a resident of New York City -- and they were able to do this without degradation of the image.
However, some of the 50 international centers in this study performed similar CT angiograms at ten times that level of radiation, 21 mSv, prompting the authors to conclude:
"Median doses of CCTA (Cardiac Computed Tomography Angiography) differ significantly between study sites and CT systems. Effective strategies to reduce radiation dose are available but some strategies are not frequently used. The comparable diagnostic image quality may support an increased use of dose-saving strategies in adequately selected patients."
source: Angioplasty.org
However, some of the 50 international centers in this study performed similar CT angiograms at ten times that level of radiation, 21 mSv, prompting the authors to conclude:
"Median doses of CCTA (Cardiac Computed Tomography Angiography) differ significantly between study sites and CT systems. Effective strategies to reduce radiation dose are available but some strategies are not frequently used. The comparable diagnostic image quality may support an increased use of dose-saving strategies in adequately selected patients."
source: Angioplasty.org
2.03.2009
MR Spectroscopy May Help Patients Avoid Invasive Procedures and Treatments for Recurrent Brain Lesions
A clinical decision model which uses MR spectroscopy to help physicians differentiate between recurrent tumors and changes in the brain tissue due to radiation treatments, may help patients avoid invasive procedures and treatments, according to a study performed at the University of Michigan Health System in Ann Arbor, MI.
The study included 33 patients who had undergone radiation treatment for brain tumors and had MRI examinations that showed new lesions (either a recurrent tumor or radiation changes). Patients then underwent MR spectroscopy and ratios of three metabolites, choline (Cho), creatine (Cr) and n-acetylaspartate (NAA) were calculated. An ROC curve and prediction model was then created, which determined the post-test probability of a patient having a recurrent tumor. For the study, the final number of patients with recurrent tumors was 20 and those with post-radiation change were 13.
source: ARRS
The study included 33 patients who had undergone radiation treatment for brain tumors and had MRI examinations that showed new lesions (either a recurrent tumor or radiation changes). Patients then underwent MR spectroscopy and ratios of three metabolites, choline (Cho), creatine (Cr) and n-acetylaspartate (NAA) were calculated. An ROC curve and prediction model was then created, which determined the post-test probability of a patient having a recurrent tumor. For the study, the final number of patients with recurrent tumors was 20 and those with post-radiation change were 13.
source: ARRS
2.02.2009
Next Generation Diagnostic Tool May Transform Patient Outcomes
During the 12th Annual Scientific Sessions (January 29 to February 1, 2009) of the Society for Cardiovascular Magnetic Resonance (SCMR), the world's major international society for cardiovascular imaging, the role of perfusion imaging in clinical decision making will be refined.
This technique allows measuring blood flow to the heart muscle with an unprecedented spatial resolution and without any ionizing radiation. Multicenter data has already suggested a superiority of this technique in comparison to methods now used on a routine basis. New data presented during the meeting further expands its role, suggesting that new techniques with faster imaging will further improve spatial resolution and enhance diagnostic accuracy.
source: Medical News Today
This technique allows measuring blood flow to the heart muscle with an unprecedented spatial resolution and without any ionizing radiation. Multicenter data has already suggested a superiority of this technique in comparison to methods now used on a routine basis. New data presented during the meeting further expands its role, suggesting that new techniques with faster imaging will further improve spatial resolution and enhance diagnostic accuracy.
source: Medical News Today
1.31.2009
Diagnosoft(R) Introduces Its Third MRI Analysis Innovation
MORRISVILLE, N.C. and PALO ALTO, Calif., Jan. 30 /PRNewswire/ -- Diagnosoft, Inc., an innovator in magnetic resonance (MR) image analysis software that assists in diagnosis, staging and therapeutic monitoring of cardiovascular disease, has unveiled its newest software solution: Diagnosoft(R) SENC. Strain-encoding, or SENC, is a new MRI analysis technique that will help physicians measure regional contraction, or relaxation, of the heart's myocardium. Like Diagnosoft's other two software products, Diagnosoft(R) HARP(TM) and Diagnosoft(R) PLUS, Diagnosoft(R) SENC enables quantification of data to improve diagnosis and guide monitoring and treatment of coronary artery disease.
Developed by Dr. Nael Osman, a faculty member at Johns Hopkins University, SENC is now a proprietary product of Diagnosoft, Inc. According to Dr. Osman, co-founder of Diagnosoft, "Diagnosoft(R) SENC provides an objective way to assess regional variations in muscle contraction due to ischemia, myocardial infarction, or other causes. Moreover, Diagnosoft(R) SENC produces maps of regional function with high spatial resolution at a level of quality sufficient even for the thin wall of the right ventricle. As a result, the technique can reveal small regional anomalies in contractility within the wall."
source: PR Newswire
Developed by Dr. Nael Osman, a faculty member at Johns Hopkins University, SENC is now a proprietary product of Diagnosoft, Inc. According to Dr. Osman, co-founder of Diagnosoft, "Diagnosoft(R) SENC provides an objective way to assess regional variations in muscle contraction due to ischemia, myocardial infarction, or other causes. Moreover, Diagnosoft(R) SENC produces maps of regional function with high spatial resolution at a level of quality sufficient even for the thin wall of the right ventricle. As a result, the technique can reveal small regional anomalies in contractility within the wall."
source: PR Newswire
1.26.2009
GE Healthcare introduces new 1.5T Magnetic Resonance Imaging System at Arab Health 2009
The Discovery MR450 offers some of the most advanced capabilities available on any 1.5T system, including real-time cardiac imaging, single-acquisition, multi-contrast abdominal images with outstanding fat/water separation and ultra high-resolution musculoskeletal exams with high patient throughput.
Jim Davis, Vice President & General Manager for GE Healthcare's global MR business, said: 'The Discovery MR450 combines unique workflow features with the advanced MR acquisition technology in the industry, allowing our customers to more easily conduct challenging exams, improve productivity, and become the leaders in their field. It will be of particular relevance to the Middle East region, where early detection of diseases will make treatments easier and cost-effective.'
Built around the company's proven short-bore, superconducting 1.5T magnet - the Discovery™ MR450 delivers high homogeneity for excellent results even when imaging with a large or off-center field of view (FOV).
source: AME Info
Jim Davis, Vice President & General Manager for GE Healthcare's global MR business, said: 'The Discovery MR450 combines unique workflow features with the advanced MR acquisition technology in the industry, allowing our customers to more easily conduct challenging exams, improve productivity, and become the leaders in their field. It will be of particular relevance to the Middle East region, where early detection of diseases will make treatments easier and cost-effective.'
Built around the company's proven short-bore, superconducting 1.5T magnet - the Discovery™ MR450 delivers high homogeneity for excellent results even when imaging with a large or off-center field of view (FOV).
source: AME Info
1.22.2009
Unique MRI warning system protects patients from injury
THE safety of patients undergoing MRI scanning is being stepped up with the launch of a unique metal detection system developed by two Midlands specialists.
The Ferroguard system, designed by Metrasens and Smallfry, is placed near the entrance to an MRI suite and is used to screen patients for metal compounds, which can cause major problems during scanning.
Metrasens’ chief executive, Dr Simon Goodyear, explained: “The central magnet in an MRI scanner has such a powerful attraction to ferrous metals that it can hurl a porter’s trolley across a room or rip a device from the body of a patient. According to recent studies, incidents like this occur in every 1,000 scans so by immediately alerting clinicians to any trace of ferrous metal entering the MRI scanning suite, the Ferroguard system can have a dramatic effect on improving patient safety.”
source: Healthcare Equipment and Supplies
The Ferroguard system, designed by Metrasens and Smallfry, is placed near the entrance to an MRI suite and is used to screen patients for metal compounds, which can cause major problems during scanning.
Metrasens’ chief executive, Dr Simon Goodyear, explained: “The central magnet in an MRI scanner has such a powerful attraction to ferrous metals that it can hurl a porter’s trolley across a room or rip a device from the body of a patient. According to recent studies, incidents like this occur in every 1,000 scans so by immediately alerting clinicians to any trace of ferrous metal entering the MRI scanning suite, the Ferroguard system can have a dramatic effect on improving patient safety.”
source: Healthcare Equipment and Supplies
1.19.2009
Largest Radiology Group in New York Purchases Two FONAR UPRIGHT Multi-Position MRIs
MELVILLE, NEW YORK, January 19, 200 - FONAR Corporation (NASDAQ-FONR), The Inventor of MR Scanning™, announced today that it has sold two UPRIGHT® Multi-Position™ MRI scanners to Doshi Diagnostic Imaging Services, P.C., which is among the country’s largest privately held multi-modality imaging companies as well as the largest radiology group in New York. Doshi Diagnostic is headquartered in Bethpage, Long Island, and operates approximately 40 centers in Florida, New Jersey, Long Island, and New York City.
Leena Doshi, M.D., President of Doshi Diagnostic said, “We are always looking for the latest and best technology in radiology. The FONAR UPRIGHT® Multi-Position™ MRI is a perfect compliment to existing closed high field and open low field magnets already in our system. Gravity and position can impact a patient’s anatomy, so as the body changes from lying down to being upright, so will the MRI images. Aside from it being a general all-purpose MRI producing high-quality images, the UPRIGHT® MRI will be useful in any condition where the weight-bearing image is relevant, such as spine, ankle, knee and hip.”
source: Fonar
Leena Doshi, M.D., President of Doshi Diagnostic said, “We are always looking for the latest and best technology in radiology. The FONAR UPRIGHT® Multi-Position™ MRI is a perfect compliment to existing closed high field and open low field magnets already in our system. Gravity and position can impact a patient’s anatomy, so as the body changes from lying down to being upright, so will the MRI images. Aside from it being a general all-purpose MRI producing high-quality images, the UPRIGHT® MRI will be useful in any condition where the weight-bearing image is relevant, such as spine, ankle, knee and hip.”
source: Fonar
1.13.2009
Ziosoft Receives FDA Clearance for CT Brain Perfusion Application
Redwood City, Calif. January 6, 2009 -- Ziosoft®, Inc., a leader in advanced visualization and analysis software for medical imaging, today announced that it has received 510(k) clearance from the U.S. Food and Drug Administration (FDA) for its CT brain perfusion application.
The brain perfusion application is a powerful analysis tool used with the Ziostation thin-client system. The software is unique in its ability to provide brain perfusion functionality to clinicians as a thin-client application using standard commercial hardware. This software option aids radiologists in stroke assessment by providing a color map of cerebral blood flow and other perfusion-related parameters from CT images of the brain. The brain perfusion application includes image manipulation tools as well as measurement tools such as cerebral blood volume, blood flow and mean transit time. Ziosoft's brain perfusion application provides radiologists with decision support tools to accurately assess the type and extent of cerebral perfusion disturbance whether viewed in a hospital or at a remote location offering physicians flexibility and efficiency in viewing solutions.
source: Ziosoft
The brain perfusion application is a powerful analysis tool used with the Ziostation thin-client system. The software is unique in its ability to provide brain perfusion functionality to clinicians as a thin-client application using standard commercial hardware. This software option aids radiologists in stroke assessment by providing a color map of cerebral blood flow and other perfusion-related parameters from CT images of the brain. The brain perfusion application includes image manipulation tools as well as measurement tools such as cerebral blood volume, blood flow and mean transit time. Ziosoft's brain perfusion application provides radiologists with decision support tools to accurately assess the type and extent of cerebral perfusion disturbance whether viewed in a hospital or at a remote location offering physicians flexibility and efficiency in viewing solutions.
source: Ziosoft
1.11.2009
MEDRAD Sponsors PET Research with University of Zurich
WARRENDALE, Pa., Jan. 6 /PRNewswire/ -- MEDRAD, Inc., has signed a research agreement with the University of Zurich to study dynamic PET imaging with the MEDRAD Intego(TM) PET Infusion System. The researchers will utilize MEDRAD's latest technology to more precisely control the radioactive dose delivered during PET imaging procedures.
Specifically, the study will examine patients with tumors in the chest or abdomen and compare standard quantitative techniques, such as standard uptake value (SUV), with more advanced kinetic and compartmental models. One of the primary goals of the research is to explore how controlled delivery technology can enable dynamic imaging by providing additional clinical utility and making these advanced techniques more practical. By enabling the benefit of repeatable infusion of the prescribed FDG dose to all subjects in the study, the Intego System is a key element in the research.
"The research will explore the clinical viability of dynamic imaging with PET," said Dr. Alfred Buck, University of Zurich (Switzerland). The University of Zurich is a leading institution in dynamic PET research, and has licensed its proprietary FDG delivery technology to MEDRAD for use in the Intego PET Infusion System.
source: PR Newswire
Specifically, the study will examine patients with tumors in the chest or abdomen and compare standard quantitative techniques, such as standard uptake value (SUV), with more advanced kinetic and compartmental models. One of the primary goals of the research is to explore how controlled delivery technology can enable dynamic imaging by providing additional clinical utility and making these advanced techniques more practical. By enabling the benefit of repeatable infusion of the prescribed FDG dose to all subjects in the study, the Intego System is a key element in the research.
"The research will explore the clinical viability of dynamic imaging with PET," said Dr. Alfred Buck, University of Zurich (Switzerland). The University of Zurich is a leading institution in dynamic PET research, and has licensed its proprietary FDG delivery technology to MEDRAD for use in the Intego PET Infusion System.
source: PR Newswire
1.09.2009
3T MRI: Highly Effective at Detecting Wrist Ligament Tears, Possibly Eliminating Need for Invasive Arthroscopy
MRI of the wrist at 3T is an effective way to detect wrist ligament tears and in some cases can avoid unnecessary surgery, according to a study performed at Neuroskeletal Imaging in Merritt Island, Florida.
The study included 49 patients who had both 3T MR and arthroscopy; 51 tears were found on arthroscopy. 41 of the 51 tears were also found using 3T MRI. “The resolution with 3T MRI is good. We are able to see the small ligaments a lot better and determine whether or not they are torn,” said Thomas Magee, MD, lead author of the study.
“3T MRI is beneficial to both the patient and the physician. If there is a problem, it provides a road map for the physician to use during surgery and eliminates any type of surgery for those who have normal findings,” said Dr. Magee. “We are able to see bone bruises, cysts and other things that may be pain generators instead of ligament tears,” he said.
source: ARRS
The study included 49 patients who had both 3T MR and arthroscopy; 51 tears were found on arthroscopy. 41 of the 51 tears were also found using 3T MRI. “The resolution with 3T MRI is good. We are able to see the small ligaments a lot better and determine whether or not they are torn,” said Thomas Magee, MD, lead author of the study.
“3T MRI is beneficial to both the patient and the physician. If there is a problem, it provides a road map for the physician to use during surgery and eliminates any type of surgery for those who have normal findings,” said Dr. Magee. “We are able to see bone bruises, cysts and other things that may be pain generators instead of ligament tears,” he said.
source: ARRS
1.06.2009
MR Arthrography is More Accurate than MR in Diagnosing Shoulder Tears
MR arthrography of the shoulder allows physicians to better identify tears and provides patients with an accurate diagnosis to determine whether or not surgery is needed, according to a study performed at Neuroskeletal Imaging in Merritt Island, Florida.
The study included 150 patients who underwent both 3T MRI and MR arthrography examinations of the shoulder. “We did the study to see if MR, which is noninvasive, works as well as MR arthrography, an invasive procedure that some patients are fearful of having since contrast has to be injected into the shoulder,” said Thomas Magee, MD, lead author of the study. The study found that MR arthrography was more accurate for making a diagnosis. Sensitivity on conventional MRI for anterior labral tears was 83%; for posterior labral tears was 84%; for SLAP tears was 83%; for supraspinatus tendon tears was 92%; and for partial-thickness articular surface tears was 68%. Sensitivity on MR arthrography on the other hand was significantly higher. Sensitivity for anterior labral tears was 98%; for posterior labral tears was 95%; for SLAP tears was 98%; for supraspinatus tendon tears was 100%; and for partial-thickness articular surface tears was 97%. “With MR arthrography we were able to see things with a high degree of accuracy in the shoulder,” said Dr. Magee.
source: ARRS
The study included 150 patients who underwent both 3T MRI and MR arthrography examinations of the shoulder. “We did the study to see if MR, which is noninvasive, works as well as MR arthrography, an invasive procedure that some patients are fearful of having since contrast has to be injected into the shoulder,” said Thomas Magee, MD, lead author of the study. The study found that MR arthrography was more accurate for making a diagnosis. Sensitivity on conventional MRI for anterior labral tears was 83%; for posterior labral tears was 84%; for SLAP tears was 83%; for supraspinatus tendon tears was 92%; and for partial-thickness articular surface tears was 68%. Sensitivity on MR arthrography on the other hand was significantly higher. Sensitivity for anterior labral tears was 98%; for posterior labral tears was 95%; for SLAP tears was 98%; for supraspinatus tendon tears was 100%; and for partial-thickness articular surface tears was 97%. “With MR arthrography we were able to see things with a high degree of accuracy in the shoulder,” said Dr. Magee.
source: ARRS
1.05.2009
Frost & Sullivan Awards Toshiba America Medical Systems for Innovation in Cardiovascular Imaging Products and Services
NewswireToday - /newswire/ - Mountain View, CA, United States, 01/05/2009 - Based on its recent analysis of the cardiovascular imaging market, Frost & Sullivan recognizes Toshiba America Medical Systems with the 2008 North American Frost & Sullivan Award for Healthcare Innovation.
The company has launched a variety of cardiovascular imaging devices, including Aplio™ Artida, most recently released in the cardiac ultrasound line. This product has taken echocardiography a step ahead of plain 4D imaging by automating complex measurements (wall motion tracking) made possible by 4D imaging. Equally innovative is the company's five-axis cardiovascular X-Ray system, which has proven to be highly popular despite the maturity of the market. Meanwhile, Toshiba's newest Vantage™ magnetic resonance (MR) system has set new standards in contrast-free MR angiography (MRA).
Toshiba also introduced Aquilion® ONE, a groundbreaking computed tomography (CT) system based on a 320-detector architecture, providing high temporal resolution and offering the industry's widest anatomic area coverage per gantry rotation. It enables robust, dynamic imaging of the entire heart in a single heartbeat and at a much lower radiation dose. This capability enhances image quality by eliminating the need to reconstruct images from several cardiac cycles, and enables advanced perfusion studies.
source: Newswire Today
The company has launched a variety of cardiovascular imaging devices, including Aplio™ Artida, most recently released in the cardiac ultrasound line. This product has taken echocardiography a step ahead of plain 4D imaging by automating complex measurements (wall motion tracking) made possible by 4D imaging. Equally innovative is the company's five-axis cardiovascular X-Ray system, which has proven to be highly popular despite the maturity of the market. Meanwhile, Toshiba's newest Vantage™ magnetic resonance (MR) system has set new standards in contrast-free MR angiography (MRA).
Toshiba also introduced Aquilion® ONE, a groundbreaking computed tomography (CT) system based on a 320-detector architecture, providing high temporal resolution and offering the industry's widest anatomic area coverage per gantry rotation. It enables robust, dynamic imaging of the entire heart in a single heartbeat and at a much lower radiation dose. This capability enhances image quality by eliminating the need to reconstruct images from several cardiac cycles, and enables advanced perfusion studies.
source: Newswire Today
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