Which one of the following modalities is maximum dangerous to 10 weeks pregnant lady?: (A) CT CHEST, (B) SPECT, (C) CT Abdomen, (D) Bone-scan
Answer is C. CT scan Typical effective dose (mSv) for various investigations: Chest X-ray: 0.02CT Head: 2.3CT Chest: 8CT Abdomen / Pelvis: 10Bone scan (Tc-99m): 4