Which of the following is used to differentiate tumour recurrence and rediation necrosis?: (A) PET scan, (B) MRI, (C) 3D CT, (D) USG
Answer is A. Ans. is'a'i.e., PET scanPET may be used in therapeutic monitoring after chemotherapy or radiotherapy, with a classic indication being assessment for recurrent tumor versus radiation necrosis.Conventional imaging can not differentiate recurrent tumor from radiation necrosis.