<prompt> Radioisotope study preferred for detection of parathyroid adenoma is?I-131Sestamibi scanThallium-201 scanTc 99m-MDP  <response>: Sestamibi Scan Is preferred isotope study used for Parathyroid Adenoma I-131 is used for Systemic Radiotherapy of Thyroid Cancers Thallium-201 scan is used for Myocardial Perfusion Tc99m-MDPMedronate is used for Bone scan 