三维彩色显像仪对心肌缺血诊断的价值

Value of 3-D color-coded imaging device in myocardial ischemia

对71例可疑冠心病患者同期行常规心电图(ECG)、三维彩色显像仪和冠状动脉造影(CAG)检查。71例患者中,三维彩色显像仪显示心肌缺血(MI)62例,CAG证实MI63例,对照CAG结果,三维彩色显像仪诊断MI的敏感性、特异性、阳性预测值、阴性预测值分别为91.9%、44.4%、91.9%、44.4%,总符合率为84.7%。将心室前壁、侧壁、下壁MI的检查结果分别与ECG和CAG比较,差异均无统计学意义,一致率分别为88.7%、80.3%、85.9%和80.3%、80.3%、73.2%。三维彩色显像仪可以较为准确直观地显示MI的部位和范围,有望成为一种新型、无创性MI检测方法。

Seventy-one patients suspected with coronary heart disease were tested by electrocardiogram（ECG） ,3-D color-coded imaging device and coronary angiography （CAG） in the same period. In the 71 patients, 3-D color-coded imaging device showed 62 cases with myocardial ischemia （MI） while CAG showed 63 cases. The sensitivity and specificity were 91.9% and 44.4% ; positive and negative predictivity were 91.9% and 44. 4% ; consistent rate was 84. 7%. There was no statistical significance compared with ECG and CAG for all the ventricular walls. The consistent rate for ventricular anterior, lateral, inferior wall were 88.7% , 80. 3 % , 85.9% and 80. 3 % , 80. 3 % , 73.2% respectively. 3-D color-coded imaging device can identify the site and boundary of MI intuitively. It is likely to be a new and noninvasive method for detecting MI.