目的探讨不同类型心肌灌注 结合CT冠状动脉造影（CTCA）判断冠状 动脉狭窄准确率的价值。方法 对80例 临床怀疑冠心病患者行64排CTCA及冠状 动脉造影(CAG)检查，其中28例行腺苷 负荷下多排螺旋CT心肌灌注成像检查 （MSCTP)，以CAG为“金标准”，计算并 对比CTCA与CTCA结合各种MSCTP诊断冠状 动脉狭窄准确率。结果 CTCA结合各组心 肌灌注判断冠状动脉狭窄准确率均高于 单独CTCA（76.3%）检查，而心肌首过灌 注组准确率(80.0%)与静息下心肌灌注组 (82.1%)相近，腺苷负荷组(89.3%)准确 率最高。结论 CTCA结合不同的心肌灌注 可以不同程度的提高冠状动脉狭窄准确 率。

Objective To assess the difference between computed tomography coronary angiography (CTCA) and different types of multislice spiral computed tomography perfusion imaging (MSCTP) combined with CTCA in the diagnosis of coronary artery stenosis. Methods A total of 80 cases of clinical suspected coronary heart disease patients were included in this study, CTCA and cornary angioiography (CAG) were performed in all patients. Of the 28 accepted multislice spiral computed tomography perfusion imaging (MSCTP) under adenosine stress. The diagnostic accuracy of variours MSCTP myocardial imaging were compared with the CTCA, and CAG were regarded as the "gold standard". Results The accuracy rate of CTCA combined MSCTP were higher than individual CTCA (76.3%) examination, while MSCTP under adenosine stress(89.3%) were higher than the first-pass myocardial perfusion group (80.0%) ,which similar to resting myocardial perfusion group (82.1%). Conclusion Combined CTCA with MSCTP improve the diagnostic accuracy in coronary artery stenosis.