Patients in both categories exhibit progressive brain atrophy, with most MCI patients showing the pathologic changes characteristic of Alzheimer’s. MCI patients slip into dementia at a rate of 10 to 15 percent each year. The research team found that patients with mild Alzheimer’s had 10 to 20 percent more atrophy in most cortical areas than did MCI patients.
SnapShot Pulse is the industry's first-ever computed tomography (CT) feature that maintains outstanding image quality while reducing a patient's radiation exposure by up to 70% per scan. The CT system automatically "pulses" with a patient's heartbeat, turning the X-rays on and off at desired times during the heart rate cycle. In standard cardiac CT exams, the CT is on for the duration of a scan, even during periods when a patient's heart is at an undesirable phase. Since SnapShot Pulse software only keeps the x-ray active for optimal phases of a scan, it's able to significantly reduce a patient's radiation exposure time.
source - medicalnewstoday
A House of Commons Committee slammed the law in a report a year ago expressing "alarm" that the Commission was relying on 10-year old risk assessment information in such a fast-moving high-tech area as MRI scanners.
And a recent report submitted to Brussels by UK scientists also helped win a four-year postponement while EU experts reconsider the plan.
Regisitration details are HERE
"In our study, we demonstrated that a quantitative assessment of therapeutic response for patients with diffuse large B-cell lymphoma (DLBCL) is more accurate than visual analysis alone when using the radiotracer FDG (fluorodeoxyglucose) with PET scans," said Michel Meignan, professor of nuclear medicine at Henri Mondor Hospital in Creteil, France. "The ability to predict tumor response early in the course of treatment is very valuable clinically, allowing intensification of treatment in those patients who are unlikely to response to first-line chemotherapy," he added. "Similarly, treatment could possibly be shortened in those patients who show a favorable response after one or two cycles of chemotherapy, and quantification also may help identify the disease's transformation from low-grade to aggressive stage," he explained. "However, visual interpretation of PET scans will always be the first step of analysis and will prevail in case of difficulties to quantify images," added Meignan.
source - medicalnewstoday.com
Due to the increased incidence of chronic hepatitis in the United States, particularly hepatitis C, there is a strong need for non-invasive methods to replace or supplement liver biopsy, which is relatively invasive and limited by interobserver variability and sampling error, said Bachir Taouli, MD, lead author of the study. DWI appears promising in that purpose, although it needs validation in larger series, he said.
Imaging Sciences International, the global leader in advanced dental and maxillofacial radiography products, and Henry Schein, Inc. (NASDAQ:HSIC - News), the largest provider of healthcare products and services to office-based practitioners in the combined North American and European markets, successfully participated in the first live patient demonstrations of the Next Generation i-CAT® 3-D dental imaging system at the 2007 American Dental Association (ADA) Annual Session in San Francisco, Calif.
The i-CAT® is the leader in Cone Beam 3-D imaging, producing anatomically accurate three-dimensional views of all mouth, face, and jaw anatomy. The i-CAT® is exclusively distributed by Henry Schein in the United States and Canada. The live patient 3-D imaging educational session, featuring the i-CAT®, demonstrated how Cone Beam 3-D imaging can be used to analyze patient anatomy and create the most accurate treatment plans for successful surgical procedures.
South Florida Sun-Sentinel
The CT scan — a medical darling for its detailed images, diagnostic power and big profits — is being overused in South Florida and nationally so much that some experts worry the radiation may cause cases of cancer.
New reports this year assert that computed tomography scans expose patients to small but significant doses of radiation that can add up over time, findings that CT defenders dismiss as alarmist.
The reports warn doctors to limit CT radiation exposure to patients, especially children and small adults who are at elevated risk, and to use radiation-free ultrasound and magnetic resonance imaging (MRI) if possible.
source article here
Multi-detector computed tomography (CT) scanners are traditionally used to create three-dimensional images of arteries, the vessels which carry oxygen-rich blood away from the heart and distribute blood throughout the body. Veins, smaller vessels that return blood to the heart, are more difficult to accurately image.
Developed by Cristopher Meyer, MD and Achala Vagal, MD, the new protocol allows radiologists to compensate for the extra time it takes contrast solution to reach the veins so useful images can be produced using the CT scanner.
Debates over which screening modality is best for detecting ductal carcinoma in situ (DCIS)---an early type of breast cancer in which cancerous cells are present but are confined to the milk ducts within the breasts---have in the past focused on identification of microcalcifications, small areas where cells have died and subsequently turned into calcium deposits, which are used as a hallmark of cancerous growth. Mammography can visualise these features in a breast scan whereas MRI cannot.