目的 探讨飞利浦Brilliance iCT对冠状动脉支架再狭窄的评估及其在 随访中的应用价值。方法 回顾性分析经 皮冠状动脉介入(percutaneous coronar intervention，PCI)术后的89名患者 (共112枚支架)，均因心慌、气短等不 同程度的临床症状，先后分别接受了冠 状动脉CT血管成像(coronary computed tomographic angiography，CCTA)与冠 状动脉造影(coronary angiography， CAG)检查，收集CCTA与CAG的诊断数 据，以CAG诊断结果作为参考标准，计 算CCTA诊断PCI术后支架再狭窄的敏感 性、特异性、阳性预测值、阴性预测 值及诊断的准确率。结果 112枚支架 中4枚支架因管腔内伪影较大，无法评 估，余108枚支架均可评估。CCTA显示 支架腔内通畅的为92枚，支架腔内再狭 窄的为16枚。CAG显示支架腔内通畅的 为90枚，支架腔内再狭窄的为18枚， CCTA诊断支架腔内再狭窄的敏感性为 88.9%(16/18)，特异性为100%(90/90)， 阳性预测值为100%(16/16)，阴性预 测值为97.8%(90/92)，诊断准确率 为98.1%(106/108)。结 论 飞利浦 Brilliance iCT冠状动脉血管成像能够清 晰显示支架腔内情况，并准确地评估支架 内腔再狭窄程度，是一种有效评价PCI术 后支架再狭窄的无创检查方法，对PCI术 后患者的随访有非常重要的临床应用价 值，可作为当前临床评估冠状动脉支架再 狭窄的首选无创检查方法。

Objective To evaluate the value of PHILPS Brilliance iCT in restenosis of coronary artery stent and its application in follow-up. Methods A retrospective analysis of 89 patients (112 stents) after percutaneous coronary intervention (percutaneous coronar intervention, PCI) underwent coronary artery CT angiography (coronary computed tomographic angiography, CCTA) and coronal coronary artery angiography (coronary computed tomographic angiography, CCTA), respectively. The coronary angiography (CAG) examination was used to collect the diagnostic data of CCTA and CAG. The sensitivity, specificity, positive predictive value, negative predictive value, and diagnostic accuracy of the stent restenosis after the CCTA diagnosis of PCI were calculated with the results of CAG diagnosis as the reference standard. Results 4 stents in 112 stents were not evaluated because of artifacts in the lumen, and the remaining 108 stents could be evaluated. CCTA showed 92 stent patency and 16 stent restenosis. CAG showed 90 stent restenosis and 18 stent restenosis. The sensitivity of CCTA diagnostic stent restenosis was 88.9% (16/18), the specificity was 100% (90/90), the positive predictive value was 100% (16/16), negative predictive value was 97.8% (90/92), and the diagnostic accuracy was 98.1% (106/108). Conclusion PHILPS Brilliance iCT coronary artery angiography can clearly display the status of the stent and accurately evaluate the degree of stent restenosis. It is a noninvasive method to evaluate the stent restenosis after PCI. It is of great clinical value for the follow-up of patients after PCI, and can be used as the current clinical practice. Noninvasive examination is the first choice for assessing coronary stent restenosis.