PET Scan Shows During Treatment If Radiation Is Shrinking Lung Tumor

Lung cancer patients may not need to wait till their radiation treatment is over to know if it worked. A PET scan several weeks after starting radiation treatment for lung cancer can indicate whether the tumor will respond to the treatment, according to a new study by researchers at the University of Michigan Comprehensive Cancer Center.

Traditionally, PET, or positron emission tomography, has been used after radiation treatment for lung cancer to assess whether the tumor responded to treatment and whether the patients will have a chance of being cured. Using PET several weeks into treatment, researchers found a strong correlation between tumor responses during treatment and response three months after completion of the treatment. This could potentially allow doctors to change the radiation treatment plan before treatment ends to improve the outcome.

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