New scan could spare brain cancer patients unnecessary surgery

This study is testing a new type of PET/MRI scan to see if it can tell the difference between a tumor growing back and radiation damage (called radionecrosis) in people who have had brain radiation for cancer. Both conditions look similar on regular scans, so doctors often need surgery to find out which it is. The goal is to see if this special scan can give the right answer without needing an operation. About 30 adults who had brain radiation and now have a new brain lesion will get the scan, and the results will be checked against any surgery or follow-up.