心脏X综合征患者ATP负荷^99m^TC-MIBI心肌灌注显像分析

目的总结和分析心脏X综合征患者ATP负荷^99m^TC-MIBI心肌灌注显像（ATP—MPI）的特点。方法选取临床符合心脏X综合征诊断标准的患者28例，分别行ATP负荷及静息心肌灌注显像，并分析显像结果。结果11例男性患者中有7例（63．64％）出现异常心肌灌注显像，其中有6例（85．71％）表现为可逆性分布，1例（14．29％）表现为反向再分布；17例女性患者中有12例（70．59％）出现异常心肌灌注显像，其中9例（75％）表现为可逆性缺损，3例（25％）表现为反向再分布。男女性出现异常心肌灌注显像的比例无统计学意义（P〉O．05）。结论ATP负荷^99m^TC-MIBI心肌灌注显像是评价心脏x综合征冠状动脉微循环病变的一种有效方法。

Adenosine Triphosphate Infusion 99mTC-MIBI Myocardial Perfusion Tomography of Patients with Cardiac Syndrome X

Objective To clarify the imaging characteristics of adenosine triphosphate （ATP） using ^99m^TC-MIBI SPECT myocardial perfusion imaging in patients with cardiac syndrome X. Methods Twenty-eight patients diagnosed with cardiac syndrome X were enrolled in this study.They all underwent adenosine triphosphate （ATP） using ^99m^TC-MIBI SPECT myocardial perfusion imaging. Results 7 out of 11 male patients with cardiac syndrome X showed abnormal perfusion imaging （63.64%）,among abnormalitites 6 cases （85.71%） of expression was reversible defects, 1 case （14.29%） showed reverse redistribution.17 female patients with cardiac syndrome X had 12 cases （70.59%） with abnormal perfusion defects,among them 9 cases （75%） showed reversible defects and 3 cases （25%） showed reverse redistribution. There was no significant difference between two genders （P〉0.05）. Conclusion Adenosine triphosphate infusion 99mTC-MIBI myocardial perfusion tomography is an effective method in the detection of microcirculatory pathological changes of coronary artery in patients with cardiac syndrome X.