Comparing radioimaging nuclear medicine tests for cariology study.....Must be done prior to partial hip replacement surgery of 59 yr old male with changed EKG in the right atrial bundle. A stress test concommitant nuclear med study to be done this Wed. No prior Hx of cardiac or other organ disease. Has asthma and occasional sleep apnea / dyspnea. Has family Hx of Prostate cancer, father and paternal uncles (2); arthritis of hip to be replaced, back iniury post 20 yrs from lifting. Cardiologist wants Sestamib nuc. Med. stress study; literature shows binding of Sestamib to parathyroid (and posssible other endocrine glands) equally to heart. Why not use Tetrofosmin? Know any radiologists that do, better yet, PET-MRI fusion imaging studies, where gamma radiation is 1/8-1/10 the exposure to patient?