影响^（99）Tc^m－MIBI心／肝比值的因素

ANALYSIS OF THE INFLUENCE FACTORS ON MYOCARDIUM TO LIVER RATIO OF ￣(99)Tc￣m-MIBI

通过使用不同厂家￣（９９）Ｔｃ￣ｍ－ＭＩＢＩ（下称ＭＩＢＩ）药盒对１１３例疑有心肌损伤病人进行ＳＰＥＣＴ断层。采用心／肝放射性比作为心肌对ＭＩＢＩ摄取的参数，对比分析了ＭＩＢＩ药盒的制备、还原剂、就检顺序与心／肝比的关系。结果表明：心／肝比与ＭＩＢＩ药盒还原剂类型无关，在６０－１２０ｍｉｎ内，与就检先后顺序无关，呈个体之间的差异。当ＭＩＢＩ的放射化学纯度＞９５％时，心／肝比与之不相关。

The resting myocardicaL SPECT by different MIBI kits for 113 cases of normal and ischemic heartdisease is performed. The preparation of kits, reducting agents,and the time of imaging are checkedusing myocardium to liver(M/L)ratio as the parameter of myocardium uptake of MIBI.It showsthat MIBI uptake of myocardium has no relation with the reducing agents,the time of imaging between 60-120 min,while M/L ratio varied in every individual case. The ratio of M/L has also norelation to the radiochemical Purity(RCP)as long as RCP is more than 95%.