<prompt> MRI is the investigation of choice in all of the following except:SyringomyeliaBrain stem tumorsSkull bone tumorsMultiple sclerosis  <response>: Ans. c Skull bone tumors MRI is best for soft tissue tumors CT is best for Bone tumors Imaging modality of choice to detect cerebral necrosis - PET scan. IOC for Leptomeningeal Carcinomatosis-Gadolinium enhanced MRI 