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目的:评价数字减影CT血管成像(DSCTA)诊断经皮冠状动脉介入(PCI)术后管腔再狭窄的准确性,并与血管内超声(IVUS)作对比分析研究,探讨其临床应用前景。方法:收集2009年3月至2011年12月期间,共15例PCI术后复查疑似管腔再狭窄患者的DSCTA、血管造影(CAG)、IVUS的检查资料,以IVUS结果为参照,评价DSCT对冠脉PCI术后管腔再狭窄诊断的准确性。结果:15例患者DSCT、CAG及IVUS分别诊断支架内再狭窄<50%的患者为10例、13例、11例;支架内冠状再狭窄>50%为5例、2例、4例;三者之间比较有一致性(P>0.05)。结论:DSCTA能准确评估PCI术后再狭窄,与IVUS结果有一致性,可作为PCI术后复查的首选方法。
OBJECTIVE: To evaluate the accuracy of digital subtraction CT angiography (DSCTA) in the diagnosis of restenosis after percutaneous coronary intervention (PCI) and compare it with intravascular ultrasound (IVUS) to explore its clinical application prospects. Methods: From March 2009 to December 2011, a total of 15 patients with suspected lumen restenosis after PCI were examined by DSCTA, angiography (CAG) and IVUS. The IVUS results were used as reference to evaluate the effect of DSCT on Accuracy of diagnosis of lumen restenosis after coronary. Results: Among the 15 cases, 10 cases were diagnosed by DSCT, CAG and IVUS respectively in 10 cases, 13 cases were in restenosis, 11 cases were in coronary stent restenosis; 5 cases were in coronary stent restenosis in 5 cases, 2 cases were in 4 cases; Comparison between the more consistent (P> 0.05). Conclusion: DSCTA can accurately assess the restenosis after PCI and is consistent with the results of IVUS. It can be used as the first choice for postoperative PCI.