On going profects 1. Role of 68Ga PSMA PET/CT in evaluating recurrence in previously treated patients with glioma of the brain 2. 68Ga- DOTA - FAPI - 46 & 18FDG PET/CT for the diagnosis of primary & metastic liesons in patients with various types of cancers 3. A pilot study to invetigate 18F-AVTO11 as a PET radiotracer to sutdy P-gy status on breast cancer 4. The Role of 18F - FDG PET/CT in patients with primary of Unkonwn origin 5. To do or not to do presurgical PET/CT in patients with oral SCC