当前位置:众信范文网 >专题范文 > 公文范文 > 静息心肌透壁灌注指数TPR对冠心病附加诊断价值

静息心肌透壁灌注指数TPR对冠心病附加诊断价值

时间:2022-10-23 18:40:05 来源:网友投稿


打开文本图片集

[摘要] 目的 探讨静息状态下心肌透壁灌注指数(TPR)能否提高冠状动脉CT血管造影(CCTA)对冠心病诊断的准确性。 方法 回顾性分析2015年1~10月临床疑诊为冠心病并于CCTA后2周内完成冠脉血管造影(CAG)检查病例,共270例入选。应用CCTA的原始数据进行TPR分析,以CAG结果为参照,评价CCTA联合TPR对冠心病的诊断价值。 结果 单独CCTA以及联合TPR均可诊断冠心病(χ2=146.2、141.9,P均<0.01),受试者特征曲线(ROC)下面积分别为0.866、0.885。单独CCTA诊断冠心病的敏感性为93.5%(188/201),特异性为79.7%(55/69),阳性预测值为93.1%(188/202),阴性预测值为80.9%(55/68)。CCTA联合TPR诊断冠心病的敏感性为88.6%(178/201),特异性为88.4%(61/69),阳性预测值为95.7%(178/186),阴性预测值为72.6%(61/84)。 结论 TPR有助于提高CCTA诊断冠心病的准确性及特异性。

[关键词] 冠心病;冠状动脉CT造影;静息灌注成像;心肌透壁灌注指数

[中图分类号] R816.2 [文献标识码] A [文章编号] 1673-9701(2016)14-0005-04

[Abstract] Objective To evaluate the diagnostic accuracy of electrocardiographically gated 320-row coronary computed tomographic angiography (CCTA) in combination with resting transmural perfusion ratio (TPR) in individuals without known coronary artery disease(CAD). Methods A total of 270 cases clinical suspected coronary heart disease(CHD)conformed CCTA and CAG examination during January to October in 2015 were eolled. TPR analysis was conducted from CCTA original data. The value of CCTA in combination with TPR for diagnosing CHD was evaluated referring to CAG results. Results CCTA alone and combined with resting TPR could be used to diagnose CHD(χ2=146.2, 141.9, P<0.01), the areas under receiver operating characteristic curve(ROC) were 0.866、0.885. The sensitivity,specificity,positive predictive value(PPV) and negative predictive value (NPV) of CCTA diagnosis of CHD alone were 93.5%(188/201),79.7%(55/69),93.1%(188/202), 80.9%(55/68). Those of CCTA Combined TPR were 88.6%(178/201), 88.4%(61/69), 95.7%(178/186), 72.6%(61/84), respectively. Conclusion CHD could be diagnosed by CCTA in conjunction with resting TPR with improving accuracy and specificity.

[Key words] Coronary heart disease; Coronary CT angiography; Resting perfusion imaging; Myocardial transmural perfusion ratio

冠状动脉造影(coronary computed tomography angiography,CCTA)作为成熟的影像成像技术,在识别冠状动脉狭窄方面具有高阴性预测值[1,2],临床上常用来除外中低危险度患者罹患冠状动脉疾病(coronary artery disease,CAD)。文献报道,CT心肌灌注成像联合 CCTA 可以准确预测冠状动脉狭窄引起的灌注缺损[3-5]。半定量CT灌注参数心肌透壁灌注指数(transmural perfusion ratio,TPR)可反映心肌灌注不均匀[6-8]。本文以320排CCTA数据重建各个心肌节段心肌TPR,评估TPR是否能提高CCTA对冠心病(coronary heart disease,CHD)诊断的准确性。

1 资料与方法

1.1 一般资料

收集我院2015年1~10月期间疑似CHD患者症状而在320排CT容积模式下行CCTA检查,并且在接下来2周内进行冠脉造影(coronal angiography,CAG)患者。排除:①既往有心肌梗死史或心肌酶异常;②疑似或确诊心肌炎或浸润性心肌病(包括心脏色素沉着病,淀粉样变,结节病等);③有血运重建手术史(冠状动脉搭桥术或经皮冠状动脉介入治疗)等。共339例病例入选,剔除冠脉支架植入术后22例,冠脉搭桥(CABG)术后6例,陈旧心肌梗死8例,CCTA和CAG期间发生急性心肌梗死10例,心肌桥23例,共270例纳入统计。男185例,女85例,年龄35~92岁,平均62.5岁。临床症状:胸闷127例,心前区痛45例,胸闷、胸痛42例,气促、呼吸困难30例,心悸13例,体检7例,头痛6例。既往有高血压病153例,高血压性心脏病18例,糖尿病62例,高脂/高胆固醇血症68例,脂肪肝30例,高尿酸血症13例。

推荐访问: 灌注 心肌 冠心病 附加 诊断