~(99m)Tc-MIBI心肌灌注显像已得到广泛的临床应用.以每次静脉注射740MBq计算,每次静息显像时甲状腺的辐射剂量约为11mGy(1.1rad).该剂量对甲状腺功能虽无重要危害,但与~(99m)Tc-过锝酸钠甲状腺显像相比(6.5mGy),心肌显像时甲状腺受的辐射剂量要大5倍,而且冠心病人常需多次作灌注显像.考虑到在作甲状腺功能检查时,加服过氯酸钾 ~ (99m) Tc-MIBI myocardial perfusion imaging has been widely used in clinical applications.Each intravenous injection of 740MBq calculated at each resting imaging thyroid radiation dose of about 11mGy (1.1rad) .The dose of thyroid function Although no significant harm, but compared with ~ (99m) Tc-pertechnetate thyroid imaging (6.5mGy), myocardial imaging when the thyroid by radiation dose to 5 times larger, and coronary heart disease patients often need multiple Perfusion imaging. Taking into account the thyroid function tests, plus take potassium perchlorate