128层螺旋CT在冠状动脉不同程度狭窄中的临床诊断价值

Diagnostic value of 128-slice CT in various degrees of coronary artery stenosis

目的探讨128层螺旋CT在冠心病患者冠状动脉不同程度狭窄中的临床诊断价值。方法对2009年5月至2011年5月收治的冠心病患者40例采用德国西门子128层螺旋CT进行检查,并与选择性冠状动脉造影检查结果进行对照,评价128层螺旋CT冠状动脉造影的准确性。结果在可评价的265支血管节段中,血管正常182支,狭窄83支。CAG和MSCT对冠脉狭窄程度≥50%的冠脉总节段数经统计学处理,差异无统计学意义(P>0.05)。敏感性为97.59%(81/83),特异性为95.60%(174/182),阴性预测值为98.90%(180/182),阳性预测值为95.18%(79/83),准确性为96.23%(255/265)。结论 128层螺旋CT是一种无创的成像方法,能清晰显示冠状动脉管壁的钙化及软斑块和血栓,并可利用智能血管分析软件测得管腔的狭窄程度,在一定程度上可替代常规的选择性冠状动脉造影。

Objective To explore the diagnostic value of 128-slice CT in varying degrees of coronary stenosis.Methods The hospital in May 2009 to May 2011 were treated 40 patients with coronary heart disease using Germany＇s Siemens 128-slice CT for examination,and selective coronary angiography and the results were compared to evaluate 128-slice CT coronary imaging accuracy.Results In 265 evaluable vessel segments in normal blood vessel 182,narrow 83.CAG and MSCT assessment of coronary stenosis consistent test results.CAG and MSCT for coronary stenosis ≥ 50% of the total number of segments after coronary statistical difference was not statistically significant（P0.05）.Sensitivity of 97.59%（81/83）,specificity of 95.60%（174/182） and negative predictive value 98.90%（180/182）,positive predictive value of 95.18%（79/83）,accuracy to 96.23%（255/265）.Conclusions The 128-slice CT is a noninvasive imaging method that can clearly show the coronary artery wall calcification and soft plaque and thrombus,and the use of intelligence analysis software measured vessel lumen stenosis,to a certain extent,alternative to conventional selective coronary angiography.