冠状动脉双源CT与冠状动脉造影成像对急诊胸痛患者诊断冠心病的价值

目的:以常规冠状动脉造影(CAG)为"金标准",探讨急诊胸痛患者双源CT(DSCT)冠状动脉血管成像诊断冠心病的价值,分析DSCT诊断冠心病的准确度、灵敏度、特异度、阳性预测值和阴性预测值。方法:对115例以胸痛为主诉的急诊就诊、临床怀疑冠心病拟行CAG的患者[男60例,女55例,平均年龄(66.37±10.29)岁]进行DSCT冠状动脉成像,统计分析DSCT对诊断冠状动脉不同程度狭窄冠心病的准确度、灵敏度及特异度,并与CAG结果对比。结果:共获得92例有诊断价值的病例,DSCT诊断冠状动脉中重度狭窄的准确度为94.6%,灵敏度、特异度、阳性预测值和阴性预测值分别为96.7%、90.6%、95.1%和93.5%。对于诊断轻度狭窄冠心病的灵敏度为70.6%,特异度为63.9%,阳性预测值为34.3%,阴性预测值为91.2%。结论:DSCT冠状动脉成像可作为临床冠心病可疑患者CAG手术前的预筛手段,当患者的冠状动脉为中重度狭窄时,诊断的准确度、灵敏度、特异度较高,DSCT与CAG有很好的一致性,其对是否需进一步CAG检查有较大的指导意义。DSCT对于冠状动脉轻度狭窄患者的阴性预测值较高,提示如果DSCT判定患者无冠状动脉病变,基本上无进一步行CAG的必要。     

冠状动脉CTA评估冠状动脉狭窄程度的准确性及误差分析

目的:探讨冠状动脉CT血管造影(CTA)评估冠状动脉狭窄程度的准确性及误差分析。方法:回顾性选取2019年7月—2022年6月就诊于我院心内科的病人92例,所有病人因疑诊冠心病,均先后成功接受冠状动脉CTA及冠状动脉造影(CAG)检查,并以CAG为诊断金标准,评价冠状动脉CTA筛查冠心病冠状动脉狭窄程度的准确性及误差。结果:92例病人以CAG为金标准诊断,冠状动脉CTA诊断冠心病的敏感度为89.86%,特异度为91.30%,准确度为90.22%,阳性预测值为96.88%,阴性预测值为75.00%;冠状动脉CTA评估轻度、中度、重度狭窄的敏感度分别为72.16%、65.38%、62.89%,诊断轻度、中度、重度狭窄的特异度、阴性预测值、准确度均较高;冠状动脉CTA、CAG在评估左前降支(LAD)、右冠状动脉(RCA)不同程度狭窄一致性较好(Kappa值分别为0.788,0.729,P均<0.001),评估左回旋支(LCX)不同程度狭窄一致性一般(Kappa值=0.596,P<0.001);冠状动脉CTA评估LAD、LCX、RCA血管轻度、中度、重度狭窄时,其特异度、准确度、阴...     

64排螺旋CT冠状动脉成像在冠状动脉病变诊断中的临床研究

目的探讨和评价64排螺旋CT（MSCT）在冠心病诊断中的有效性。方法选取在3周内行64排MSCT和冠状动脉造影（CAG）检查的临床可疑或确诊冠心病的患者（两项检查平均间隔时间9d）114例，其中男性62例，平均年龄65岁。将MSCT和CAG检查结果进行分析，管腔狭窄≥50％定义为明显狭窄。结果在114例患者中，CAG检出至少有1处明显狭窄的患者106例，其中单支病变占33％（38例），多支病变占60％（68例）。MSCT检出其中的104例（诊断准确度95％）。按节段分析，MSCT诊断冠状动脉明显狭窄的灵敏度、特异度、阳性预测值、阴性预测值分别为87％、96％、86％、96％。以各冠状动脉分析，MSCT诊断冠状动脉明显狭窄的灵敏度、特异度、阳性预测值、阴性预测值分别为96％、94％、95％、96％。MSCT与CAG在发现冠状动脉明显狭窄上差异无统计学意义（P〉0．05）。结论64排MSCT诊断冠状动脉狭窄的准确度较高，作为一种冠心病诊断的无创筛查手段，有广泛的临床应用价值。     

64排螺旋CT冠状动脉成像在冠心病诊断中的应用

目的探讨64排螺旋CT冠状动脉成像在诊断冠心病中临床应用价值。方法回顾性分析2006年7月至2009年5月在新疆自治区人民医院心内科住院临床诊断或疑似冠心病患者病历资料120例,全部患者均行64排螺旋CT冠状动脉成像和选择性冠状动脉造影（CAG）,前后时间不超过2周。按照美国心脏学会（AHA）冠状动脉分段法将冠状动脉分为16段,采用目测直径法判断冠脉狭窄程度,以CAG为诊断冠心病（CHD）的＂金标准＂,计算64排螺旋CT检出中度及中度以上（≥50%）冠状动脉狭窄的敏感度、特异度、阳性预测值、阴性预测值和诊断符合率。结果总计1920冠脉节段中有1857（97%）个节段可以同时在CAG与多层螺旋CT（multisli cecomputed tomography,MSCT）上显示及评估。64排螺旋CT显示中度及中度以上冠状动脉狭窄的敏感度、特异度、阳性预测值、阴性预测值、诊断符合率分别为89%、98%、85%、98%、97%。结论 64排螺旋CT其对中度及中度以上的冠脉狭窄具有良好的诊断价值,基本能满足CHD的诊断需要,可作为CHD中危人群的一种初筛手段。     

Flash双源CT冠脉成像联合双能量心肌灌注显像对冠心病的诊断价值

目的:探讨Flash双源CT（DSCT）冠状动脉成像(DS CTA)联合双能量心肌灌注显像(DS-CTP)一站式检查对冠心病的诊断价值。方法:对60例临床考虑冠心病的患者行DSCT检查,所有患者均接受冠状动脉造影检查。以冠状动脉造影为标准诊断法,根据冠脉造影结果分为狭窄<50%（阴性）和狭窄≥50%（阳性,诊断冠心病）,计算DS CTA联合DS-CTP（平行试验）诊断冠心病的灵敏度、特异度和准确度。结果:DS-CTA诊断冠心病的灵敏度、特异度和准确度分别为84%、93%和89%;DS CTA联合DS CTP（平行试验）诊断冠心病的灵敏度、特异度和准确度分别为94%、91%和92%,与单独DS-CTA比较,灵敏度和准确度稍有提高,而特异度稍有下降,但都没有达到显著水平。结论:DS-CTA联合DS CTP对冠心病诊断具有很高的诊断价值。但DS-CTA与DS-CTA联合DS-CTP诊断价值无显著差异。     

电子束CT冠状动脉血管成像技术对老年男性冠心病患者的诊断价值

目的 :评价电子束 CT冠状动脉血管成像技术 （EBT）在老年男性冠心病患者的诊断价值。方法 :对 4 8例临床有冠心病症状、可疑冠心病症状或无症状的老年男性 ,进行 EBT及冠脉造影 （CAG）检查 ,以 CAG结果作为“金标准”评价 EBT与冠脉狭窄之间的相关性。结果 :1冠状动脉狭窄组的 EBT阳性率明显高于非狭窄组 （P<0 .0 1） ;两种方法的检测结果并无统计学差异 （P>0 .0 5 ）。 2 EBT诊断冠脉狭窄的灵敏度、特异度、误诊率、漏诊率、准确度、阳性预告值、阴性预告值、阳性似然比及阴性似然比分别为 86 %、6 7%、33%、14 %、83%、95 %、4 0 %、2 .6及 0 .2 1。3EBT阳性与冠脉存在狭窄血管支数之间呈正相关。 4 EBT对于冠脉近段血管狭窄诊断的敏感性、特异性、准确性均较高 ,而对远段血管的诊断则与 CAG相差较大。结论 :1EBT是预测老年冠心病的有价值的检查手段。 2EBT对于冠脉近段病变具体位置的确定有价值。     

多层螺旋CT量化冠状动脉钙化的评价

目的 :探讨多层螺旋 CT（multi- slice spiral CT,MSCT）量化冠状动脉钙化的临床价值。方法 :对 4 1例临床可疑冠心病患者进行 MSCT冠脉成像及其钙化的量化分析 ,并与选择性冠状动脉造影 （CAG）进行对照。结果 :MSCT对冠状动脉钙化显示清晰 ;MSCT冠状动脉造影 （multi- slice spiral CT coronary angiography,MSCTCA）对冠状动脉各分支显示良好 ,其狭窄程度与冠脉造影一致。结论 :MSCT可作为冠心病普查和冠脉术后复查的较好方法。     

128层螺旋CT冠状动脉成像在冠心病诊断中的应用价值

目的评价128层螺旋CT(128-SCT)冠状动脉成像在冠心病诊断中的应用价值。方法入选临床诊断为冠心病并行128-SCT冠脉成像检查的患者60例,在128-SCT检查后的4周内行冠状动脉造影(CAG)检查。以CAG检查结果为金标准,以冠状动脉节段为单位,对比分析各节段128-SCT及CAG检查结果,评估128-SCT诊断冠状动脉狭窄程度的准确性,同时计算128-SCT诊断冠心病的敏感性、特异性、阳性预测值、阴性预测值、诊断指数、诊断符合率及Kappa值等统计学指标。结果共评估60例患者的715个冠状动脉节段,对比CAG的结果,128-SCT有664个节段检查结果与CAG相符合,符合率达92.87%。128-SCT诊断冠心病的灵敏度为79.05%,特异度为98.52%,阳性预测值为90.22%,阴性预测值为96.47%,诊断符合率为95.66%,Kappa值为0.818。结论 128-SCT冠状动脉成像检出冠心病准确性较好,可作为诊断与排除冠心病的无创性检查方法。     

256层螺旋CT对冠状动脉狭窄的评估

目的：应用256层螺旋CT对冠状动脉狭窄进行评估。方法：回顾性分析126例拟诊冠心病患者行256层螺旋CT （CTA）和冠状动脉造影（CAG）检查的资料。以 CAG结果为诊断冠心病的“金标准”,分析 CTA检测冠心病的准确度、灵敏度、特异度、阴性预测值与阳性预测值,并分析二者诊断冠状动脉狭窄的一致性。结果：以CAG结果为诊断冠心病的“金标准”, CTA 检测393段冠脉节段冠状动脉狭窄的准确度为89.3％,灵敏度为91.4％,特异度为84.9％,阴性预测值为82.3％,阳性预测值为92.8％,Kappa值＝0.755,P＜0.01。结论：256层螺旋CT可较好地显示冠状动脉狭窄,作为简单易行的无创性检查,对血管狭窄诊断的敏感性高。可作为亚健康人群的早期筛查和冠心病的复查可靠方法。     

心脏双能量CT与负荷/静息心肌灌注显像和冠状动脉造影的对比研究

目的:探讨心脏双能量CT对冠状动脉狭窄和心肌灌注缺损的诊断价值。方法:34例临床可疑或已知冠心病患者行心脏双能量CT检查。重建冠状动脉CTA图像(dual-energy CT angiographyDE-CTA)和双能心肌灌注图(dual-energy CT perfusion DE-CTP)用于冠状动脉狭窄程度和心肌灌注缺损的评判,并与冠状动脉造影和负荷/静息心肌灌注显像(single photo emission computed tomographySPECT)为参考标准,评价心脏双能量CT对冠状动脉狭窄程度和心肌灌注缺损诊断的灵敏度、特异度、阳性预测值及阴性预测值。结果:1.28例符合纳入标准的患者进入本研究;2.DE-CTA显示408段冠状动脉,其中44段冠状动脉狭窄≥50%,以冠状动脉造影为参考标准,DE-CTA诊断冠状动脉狭窄的灵敏度、特异度、阳性预测值及阴性预测值分别为89.28%、97.70%、86.20%及98.29%,准确性为96.58%;3.DE-CTP显示心肌节段476段,其中90段显示心肌灌注缺损,以负荷/静息心肌灌注显像为参考标准,DE-CTP诊断心肌灌注缺损的灵敏度、特异度、阳性预测值及阴性预测值分别为85.71%、93.09%、74.07%及96.58%,准确性为91.71%,DE-CTP诊断心肌灌注缺损与负荷/静息心肌灌注显像,诊断心肌灌注缺损具有较好的一致性,kappa值0.74(P<0.001)。结论:双能量CT作为一项新的成像方法,不仅能够诊断冠状动脉狭窄,还能对病变冠状动脉的血流动力学改变做出准确判断。     

64层螺旋CT血管成像与冠状动脉造影对冠心病诊断价值的对比研究

目的评价64层螺旋CT在冠状动脉造影方面的诊断价值。方法58例临床诊断或可疑冠心病患者行64层螺旋CT冠状动脉成像检查,分别对左主干、左前降支、回旋支和右冠状动脉及其分支的重建图像行影像学评价,所有患者均行常规选择性冠状动脉造影检查作为对照。结果58例患者共757(87.0%)节段的冠状动脉(血管直径≥1.5 mm)成像,638节段(84.3%)可用于多层螺旋CT和冠状动脉造影定量分析。冠状动脉造影共发现狭窄101节段,多层螺旋CT发现狭窄104节段,多层螺旋CT对冠状动脉狭窄诊断的敏感性为86.1%,特异性为96.8%。结论64层螺旋CT冠状动脉造影可作为诊断冠状动脉病变的一种无创筛选方法。     

Accuracy of thin-slice computed tomography in the detection of coronary stenoses.

AIM: Our aim was to investigate the accuracy of multislice spiral computed tomography (MSCT) in the detection of significant (>50%) coronary stenosis using a scanner equipped for 16 x 0.625 mm collimation. METHODS: In 64 patients (59 male, mean age 58 +/- 5 years) with suspected coronary artery disease, MSCT (GE Light Speed-16, collimation: 16 x 0.625 mm) was performed 20 +/- 5 days before coronary angiography (CAG). Only angiographic segments >1.5 mm were considered for analysis. RESULTS: In all patients, MSCT was carried out without complications. Three patients were excluded from the analysis. Of 729 angiographic segments, 613 (84%) were judged evaluable by MSCT. Considering only the segments judged evaluable, the sensitivity was 89%, specificity 98%, positive predictive value 90%, and negative predictive value 98%. Including all segments in the analysis (evaluable and nonevaluable), sensitivity was 78%. CONCLUSIONS: Using a scanner with a collimation of 16 x 0.625 mm, our study confirms the potential role of MSCT in the detection of significant coronary stenosis with a sensitivity of 89% and a very high specificity (98%). Exclusion criteria and less than full evaluability of the coronary arteries must still be considered limitations of the method.     

The Additive Diagnostic Role of Coronary Flow Reserve in Noninvasive Evaluation of Coronary Stenosis on Left Descending Artery Previously Detected by Multislice Computed Tomography

Purpose: Multislice computed coronary angiography (MSCT) provides valuable morphological information about coronary artery disease, but precise quantification of coronary stenosis remains difficult. Transthoracic color Doppler echocardiography (TDE) gives a new insight into the functional significance of coronary luminal narrowing. We have tried to assess the additive value of coronary flow reserve (CFR) determined by TDE over MSCT in prediction of a significant stenosis on the left anterior descending artery (LAD) using the invasive coronary angiography (ICA) as a reference method. Methods: This prospective study included 63 patients in stable cardiac status with previously detected atherosclerotic lesions on LAD by MSCT. CFR assessment by TDE with adenosine infusion was obtained to all patients (feasibility was 96.92%). CFR was determined as ratio between the peak diastolic flow velocity during adenosine infusion and at basal condition, a cutoff value indicating significant stenosis was <2. ICA was preformed to all patients 24–48 hours after CFR. Results: MSCT had sensitivity of 86.36%, specificity 53.66%, positive predictive value 50.00%, negative predictive value 88.00%, and diagnostic accuracy of 65.07% in detection of significant LAD stenosis. CFR had sensitivity 81.81%, specificity 97.06%, positive predictive value 94.74%, negative predictive value 89.19%, and diagnostic accuracy of 91.07%. When the results of both methods were agreed diagnostic accuracy was improved to 92.72%. Conclusion: Additional assessment of CFR by TDE increase diagnostic accuracy of MSCT angiography in detection of significant coronary artery lesions.     

64层螺旋CT血管成像在冠心病诊断中的应用

目的评价64层螺旋CT(MSCT)血管成像在冠心病诊断中的应用价值。方法选择80例冠心病或可疑冠心病患者行心电门控的MSCT冠状动脉成像,在特定工作站完成图像重建,并与冠状动脉造影结果对照,分析64层MSCT冠状动脉成像在诊断冠心病中的应用价值。结果80例患者中共1200个冠状动脉节段,其中1096个冠状动脉节段可供临床诊断分析,104(8．7%)个冠状动脉节段因图像质量差不能进行诊断分析。在所有可供分析的78例患者中MSCT诊断冠心病的敏感度、特异度、阳性预测值、阴性预测值和诊断准确度分别是96．1%、85．2%、92%和92．3%。1096个可供评价的冠状动脉节段中MSCT识别直径狭窄≥50%病变的敏感度、特异度、阳性预测值、阴性预测值分别为93．2%、89．3%、85．6%、95．2%和92．3%。结论64层MSCT冠状动脉成像对冠心病的诊断有良好的准确性。     

Diagnostic value of the 16-detector row multislice spiral computed tomography for the detection of coronary artery stenosis in comparison to invasive coronary angiography

OBJECTIVES: The aim of this study was to determine the diagnostic accuracy of 16-slice multislice spiral computed tomography (MSCT) of the coronaries and to provide data in a real clinical setting. Previous 16-slice MSCT studies presented data excluding patients with calcification, vessels of < 1.5 or 2 mm, and segments with impaired image quality. By including these data for 16-slice MSCT, a direct comparison with new data from 64-slice MSCT is possible. METHODS AND RESULTS: Sixty two patients with suspected or known coronary artery disease (CAD) were prospectively enrolled and underwent computed tomography angiography (CTA) and invasive coronary angiography (ICA). All vessels were evaluated for the presence of a significant coronary artery stenosis (>50%) using the American Heart Association (AHA) 15-segment model. From the evaluation of 917 segments, sensitivity, specificity, and positive and negative predictive value (NPV) (positive predictive value [PPV] and NPV) for the presence of relevant coronary stenosis were 73, 98, and 71 and 98% per segment and 94, 90, and 91 and 93% per patient, respectively. The influence of age, gender, body surface area (BSA), heart rate (HR), stents, and Ca(2+)-score value was analyzed. High Ca(2+)-score values were the only statistically significant predictor for impaired diagnostic accuracy. CONCLUSIONS: In summary, CTA with evaluation of all vessel segments in a broad spectrum of patients allowed accurate and fast noninvasive coronary artery evaluation, including evaluation of stented segments. These data are very similar to those published recently for 64-slice scanners.     

64层螺旋CT对老年冠状动脉疾病患者的诊断价值评价

目的探讨64层螺旋CT对老年冠状动脉疾病患者的诊断价值。方法对61例疑为冠心病的老年患者进行冠状动脉64层螺旋CT扫描,并于1周之内进行冠状动脉造影检查。以冠状动脉造影为“金标准”,评价冠状动脉64层螺旋CT诊断老年冠状动脉疾病患者的敏感性、特异性、阳性预测值、阴性预测值及准确度。结果61例患者总计915个冠状动脉节段,64层螺旋CT能够评价其中882个节段(96．4％),其检测中度以上冠状动脉狭窄的敏感性75．6％,特异性88．1％,阳性预测值64．0％,阴性预测值92．8％,准确度85．4％。结论64层螺旋CT对老年冠状动脉疾病患者具有较高的诊断价值,有可能成为筛查老年人冠心病的一个较为可靠的无创检测手段     

40层螺旋CT冠状动脉成像在冠心病诊断和随访中的价值

目的:分析897例临床确诊或疑似冠心病患者的40层螺旋CT冠状动脉成像结果,以探讨40层螺旋CT冠状动脉成像在冠心病诊断和随访中的价值.方法:262例临床确诊和579例疑似冠心病患者予以40层螺旋CT冠状动脉成像检查,经最大密度投影、容积重建和曲面多平面重建等后处理,其中207 例患者曾行选择性冠状动脉造影检查,将40层螺旋CT冠脉成像检查结果对照冠状动脉造影检查结果计算其敏感性、特异性、准确性、阳性预测值和阴性预测值.有135例患者1年后再次做40层螺旋CT冠状动脉成像检查.结果:94%患者冠状动脉成像图像可用于分析.有斑块伴中重度狭窄病例512例,包括单支病变 216例,2支病变169例,3支病变127例.男女性可疑冠心病患者40层螺旋CT 冠状动脉成像结果显示:无斑块或有斑块伴轻度狭窄的比例女性患者为56.98%(200/351),男性患者为45.18%(103/228),χ~2 =7.72,P<0.01,随着年龄的增长,冠状动脉多支病变逐渐增多.207例多层螺旋CT 冠状动脉成像与冠状动脉造影结果对比显示,冠状动脉分支血管有意义狭窄( ≥50%)的敏感性为84.5%(223/264);特异性为97.3%(1117/1148);阳性预测值为87.8%(223/254);阴性预测值为96.5%(1117/1158);准确性为94.9%(1340/1412).135例患者1年后重复40层螺旋CT冠状动脉成像显示有斑块消失6处、有斑块缩小5处、有新斑块出现9处、有斑块扩大10处.结论:40 层螺旋C T 作为无创性冠状动脉病变诊断技术可作为冠心病筛查,随访的良好方法,尤其适合临床症状较多的女性患者的鉴别诊断以及合并有高血压、糖尿病、血脂异常的高龄患者的随访.     

冠状动脉CT成像和平板运动试验对冠心病的诊断价值

目的探讨冠状动脉CT成像(CTCA)和平板运动试验(TET)对冠心病的诊断价值。方法选择怀疑冠心病并于2周内分别行CTCA、TET及冠状动脉造影检查的患者共254例,以冠状动脉造影结果为对照指标,分析CTCA、TET及两者联合时对冠心病的诊断价值。结果 TET、CTCA及CTCA联合TET的敏感性、特异性、阳性预测值、阴性预测值和准确率分别为:60.8%、64.7%、82.5%、37.6%和61.8%;84.9%、80.9%、92.4%、66.3%和83.9%;88.3%、86.0%、94.2%、74.0%和87.7%。CTCA对左主干病变的检出率明显高于冠状动脉造影(P<0.01)。结论 CTCA和CTCA联合TET在诊断冠心病时的准确率比单独TET高,CTCA对左主干病变的检出更有一定优势。因此,临床上可将CTCA作为可疑冠心病患者的筛查方法之一。     

Diagnostic performance of 64-slice computed tomography coronary angiography to detect significant coronary artery stenosis

OBJECTIVE: We aimed to determine the diagnostic accuracy of 64-slice multi-slice computed tomography (MSCT) to detect significant coronary artery stenosis with comparison to conventional coronary angiography (CCA). METHODS: In 100 patients (70 men, average age 58 +/- 10 years and age range 31-75 years) scheduled to have conventional coronary angiography, MSCT was performed before catheterization (within 2 months). All patients were in sinus rhythm, able to hold breath for 15 seconds, and had serum creatinine levels < 1.5 mg/dl. MSCT scans were analysed by a radiologist and a cardiologist. Sensitivity, specificity, positive and negative predictive values for the detection of significant stenoses by MSCT in comparison with CCA were calculated on patient, vessel, and segmental bases. RESULTS: 64-slice computed tomography is able to detect significant coronary artery stenosis on a segmental basis with a sensitivity of 88% and specificity of 99% when compared with CCA. All patients with significantly stenotic coronary artery disease are correctly diagnosed. The presence of significant stenosis was correctly diagnosed by MSCT in 126 of 144 segments. Twelve non-significant lesions on CCA were overestimated by MSCT. On vessel-based analysis, the sensitivity and specificity of MSCT for detecting significant stenosis were 91% and 97%, respectively. CONCLUSION: Our results indicate that 64-slice computed coronary angiography is a reliable diagnostic modality for the detection of significant coronary artery stenosis in patients with sinus rhythm and scheduled to have CCA, but still has limitations of diagnostic performance on a per-segment and per-vessel basis.     

多排螺旋CT冠脉成像与冠脉造影对冠心病诊断的对比研究

目的初步评价多排螺旋CT（MSCT）在冠状动脉成像中的临床应用价值。方法18例疑诊冠状动脉狭窄患者行MSCT扫描,利用影像曲面重建,3D重建,了解冠状动脉病变情况,并与冠状动脉造影（CAG）对比。结果18例76支血管同时经MSCT和CAG成像。CAG发现狭窄27支,其中左前降支（LAD）病变11支,回旋支（LCA）病变3支,左主干（LMA）2支,右冠（RCA）病变9支,桥支病变2支。MSCT发现狭窄24支,其中LAD病变11支,LCA病变3支,LMA病变1支,RCA病变7支,桥支病变2支。MSCT与CAG结果相符的病变血管22支,MSCT成像的敏感性为82%（22/27）,特异性96%（47/49）。结论在控制心率的情况下MSCT可作为冠状动脉狭窄的一种无创筛选检查方法。