16层螺旋CT冠状动脉成像的临床应用价值

目的评价16层螺旋CT冠状动脉成像的临床应用价值。方法对47例临床怀疑冠心病患者行16层螺旋冠状动脉成像扫描,利用多平面重组（MPR）、最大密度投影重组（MIP）及容积重组（VRT）技术做图像后处理。对其中11例行常规冠脉造影检查,对比分析检查结果。结果47例（611条）患者541条（85.54%）可用于影像学评价,11例冠状动脉造影患者发现中、重度狭窄血管31条,CTA检出中、重度狭窄血管32条,与冠状动脉造影相符27条,CTA的敏感度为87.10%,特异度为95.54%,阳性预测值为84.38%,阴性预测值为96.40%。结论16层螺旋CT冠状动脉成像技术对病变血管狭窄的评价（冠状动脉腔径狭窄≥50%）有一定的应用价值,可作为一种常规筛查方法。

The clinical applicability value of 16-slice spiral computed tomography (MSCT) coronary angiography

Objective To assess the clinical applicability value of 16-slice spiral computed tomography （MSCT） coronary angiography. Methods 47 patients with suspected coronary artery disease were performed 16- slice spiral CT in coronary artery. The reconstructed images were processed into multiplanner reconstruction （MPR） and maximum intensity projection （MIP）and volume rendering （VR）. 11 of the 47 patients underwent selective coronary artery angiography （SCA）, the outcomes of the two kinds of examination were compared. Resuits In the 611 coronary artery segments of 47 patients, 541 could be evaluated by MSCT （85.54%）. In the 11 patients ,31 coronary artery segments with significant stenoses（ ≥50% reduction of vessel diameter）were detected by SCA ,32 segments were detected by CT. There were 27 segments consistent with SCA,. Compared with SCA, the sensitivity, specificity was 87.10% , 95.54% respectively, the positive predictive value and negative predictive value was 84. 38%, 96. 40% respectively. Conclusions 16-slice spiral computed tomography coronary angiography has higher clinical application value for the evaluation of significant coronary artery stenoses （ ≥50% ）. It might be a routine method of choice for patient with coronary artery disease.