<prompt> A patient presented with Right upper quadrant pain with dyspepsia. USG showed Edematous Gallbladder wall. What will be the most sensitive investigation to confirm the suspected diagnosis here?CECTHIDAMRIERCP  <response>: Ans. b HIDA scanRef Sabiston Page 148820th edition Gold standard investigation for Acute Cholecystitis- HIDA scan Finding- Non visualization of Gallbladder in HIDA Scan 