摘要
目的 :评价 16层螺旋CT诊断冠状动脉疾病的准确性及局限性。方法 :2 5例患者进行 16层螺旋CT冠状动脉成像 (回顾性心电门控、0 .4 2s螺旋扫描 ) ,并与常规冠状动脉造影对照。结果 :在 2 5例患者的 186节段 (血管直径≥ 2mm)中 ,CT图像能满足诊断要求的有 16 1节段 (86 .5 % )。对于CT图像能满足诊断要求的冠状动脉节段 ,MSCT显示中度和中度以上狭窄的敏感度和特异度分别 83.8% (2 6 /31)和 95 .3% (12 4 /130 )。若将不能满足诊断要求的 2 5节段包括内 ,则MSCT显示中度和中度以上狭窄的敏感度为 76 .4 % (2 6 /34)。结论 :16层螺旋CT冠状动脉成像可用于无创性诊断冠状动脉中高度狭窄 ,局限性伪影的影响不可避免。
Objective:To evaluate the accuracy and limit of 16-slice spiral CT in diagnosis of coronary artery disease.Methods:25 patients were studied by 16-slice spiral CT (retrospectively ECG-gating;0.42s rotation).The results were compared with coronary artery angiography.Results:In the 186 coronary artery segments (vessel diameter≥2mm) of 25 patients, 161 were judged to be evaluable by MSCT (86.5%).The sensitivity and specificity for the detection of ≥50% stenosis were 83.8% (26/31) and 95.3% (124/130) respectively. When 25 coronary artery segments judged unevaluable were included in the analysis, the sensitivity was 76.4% (26/34).Conclusion:16-slice spiral CT could be used in noninvasive assessment of significant coronary artery stenoses with high accuracy. The limit was unavoidable artifacts.
出处
《医学影像学杂志》
2004年第5期369-372,共4页
Journal of Medical Imaging
