<prompt> Which of the following is the least sensitive in preoperative imaging of parathyroid in Primary hyperparathyroidism?SestamibiSestamibi SPECTMRIUSG  <response>: Ans. c MRIRef. SABISTON 20th Edition Page 930ImagingSensitivitySpecificitySafetyTc99 SestamibiModerateModerateSafeSestamibiSPECTHighHighSafeUltrasoundModerateModerateSafe4D CTHighHighRadiationMRILowModerateSafePETCTHighHighRadiationVenous localizationHighHighNephropathy site specific injuryUSG guided biopsyHighHighSite specific injury 