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作者以冠状动脉造影（ＣＡＧ）检查为金标准，１２７例病人以冠心病收入院，行ＣＡＧ检查，并行心电图（ＥＣＧ）、心脏Ｂ超和心肌灌注断层显像等无创伤检查，对其诊断效能进行评价。结果显示：ＥＣＧ，心脏Ｂ超和心肌灌注断层显像的敏感度分别为６０．３％、７０．９％和９０．５％，特异度分别为５４．７％、６２．３％和２１．４％；准确度分别为５７．５％、６６．７％和６２．９％。ＥＣＧ和心脏Ｂ超联合试验可使敏感度提高到７８．２％，特异度提高到８３．０％。心肌灌注显像的特异度较低，但对ＣＡＧ不能检出冠状动脉的微血管病变而心肌灌注显像对此类病人的敏感度却较高。心脏Ｂ超检出的舒张期功能障碍特别是同时合并节段性室壁运动异常对冠心病的诊断具有重要意义。
The authors used coronary angiography (CAG) as the gold standard, and 127 patients with coronary heart disease hospital admission, CAG examination, parallel electrocardiogram (ECG), cardiac ultrasonography and myocardial perfusion tomography and other noninvasive examination of its diagnostic efficacy Evaluation. The results showed that the sensitivities of ECG, B ultrasound and myocardial perfusion imaging were 60.3%, 70.9% and 90.5% respectively, and the specificity were 54.7%, 62.3% and 21 respectively. 4%; accuracy were 57.5%, 66.7% and 62.9% respectively. ECG and heart B-joint test can increase the sensitivity to 78.2%, specificity increased to 83.0%. Myocardial perfusion imaging is less specific, but CAG can not detect coronary microvascular lesions and myocardial perfusion imaging is more sensitive to such patients. Cardiac B-diastolic dysfunction, especially combined with segmental wall motion abnormalities in the diagnosis of coronary heart disease is of great significance.