16层CT冠状动脉狭窄造影成像的临床应用

目的评价16层CT冠状动脉成像（CTCA）的临床价值。方法对58例患者进行回顾性心电门控平扫及增强,后处理用Vessel View软件对所有病例扫描图像做多平面重建（MPR）,最大密度投影（MIP）,容积成像（VRT）,其中35例可疑冠心病患者行冠状动脉造影（SCA）比较。以管腔直径减少≥50%作为判定狭窄的标准,对各冠状动脉主要分支进行节段分析。结果85.1%冠状动脉节段图像可以用做评价,可较准确的显示冠状动脉病变。与SCA对照,敏感度和特异度分别为86.5%（32/37）和95.1%（214/225）。结论16层CT冠状动脉成像可显示较长节段的冠状动脉,较为准确地认定冠状动脉病变,具有较高的临床应用价值。

Clinical application of 16-slice computed tomography angiography in the straitness of coronary artery

Objective To evaluate the clinical values of 16-slice spiral computed tomography coronary angiography(CTCA).Methods Fifty eight patients have been scanned with ECG-gated MSCTCA and angiograms were studied retrospectibely.For all the cases,the Vessel View software was used for postprocessing: multiplanar reformation(MPR),maximum intensity projection(MIP),volume rendering technique(VRT).Then 35 patients of them had undergone selective coronary angiographu(SCA) as a comparision.The reduction more than 50% vessel diameter was the determinate standard,it was fairly accurate diagnoses for the coronary disease.Results 81.5% of the coronary segments in the MSCTCA could be evaluate and also display the pathological change of the coronary arteries in the vessel walls.Compared with SCA,the sensitivity,specificity was 86.5%(32/37),95.1%(214/225)respectively.Conclusion 16-slice CTCA can display longer segment of coronary artery and assess coronary disease with high accuracy,which is higher clinical value.