Radiology General 546df1c3 Radiation exposure is least in A CT pelvis B IVP C Cystography D Micturating cysto - Urethrogram High-Yield Explanation MCU : 1 - 2 (msv) - 60 chest x - ray. Cystography : 1- 8 (msievert) - 90cxr. IVP : 2 - 4 - 120cxr. CT pelvis : 10 - 500cxr.