The purpose of this study is to determine the benefit of using PET (positron emission tomography) in addition to the standard CT (computed tomography) to plan the radiation therapy for your cancer. Patients will have one additional PET-CT during treatment. The information from the PET-CT may allow your radiation doctor to change the radiation plan or the delivery of the radiation for your cancer such as the total dose of radiation or the size of the area to receive further radiation. Presently the use of PET scans to adjust radiation therapy during your radiation treatment is not standard of care and is being investigated in this study. Patients undergoing routine radiation planning PET-CT scan in the Department of Radiation Oncology with certain gastrointestinal cancers and gynecology cancers may be invited participate in this study. The study involves performing a second PET scan after patients have completed 3-4 weeks of daily radiation therapy. Patients must be 21 years and older. Patients must sign informed consent prior to study entry and must meet the inclusion criteria.
Duke Principle Investigator: Dr. Junzo Chino