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目的:探讨支架影像增强显影技术(StentBoost,SB)增强冠状动脉(冠脉)支架显影以及对球囊后扩张的指导作用。方法:收集2009-03至2010-07经皮冠脉介入治疗(PCI)术后在SB指导下给予球囊后扩张的184例患者资料,平均年龄(64.5±10.9)岁(42～83岁),对其后扩张前后SB测量数据进行比较。其中52例(28.26%)患者给予血管内超声(IVUS)检查,并分别对冠脉狭窄程度定量分析(QCA)、IVUS和SB检测数据进行相关性分析。结果:后扩张后较后扩张前支架内最小直径[(2.72±0.35)mm vs.(2.42±0.39)mm]、支架内最大直径[(3.26±0.37)mm vs.(3.09±0.38)mm]及支架内平均直径[(2.99±0.36)mm vs.(2.76±0.43)mm]均明显增大,支架偏心指数(0.17±0.04 vs.0.22±0.06)明显减小,差异均有统计学意义(P<0.001)。支架内最小直径IVUS与SB的相关性r=0.979,P<0.0001;冠脉狭窄程度定量分析与SB的相关性r=0.973,P<0.0001;QCA与IVUS的相关性r=0.964,P<0.0001。结论:SB与IVUS具有良好的相关性,且在评价支架置入效果以及指导高压球囊后扩张方面具有临床实用价值。
Objective: To investigate the effect of stenting (StentBoost, SB) on the development of coronary artery (coronary stent) and the guidance of post-balloon dilatation. Methods: A total of 184 patients with post-balloon dilatation after percutaneous coronary intervention (PCI) from 2009-03 to 2010-07 under the guidance of SB were collected. The mean age (64.5 ± 10.9) years (range, 42-83 years) , Before and after the expansion of SB measurement data to compare. Among them, 52 cases (28.26%) were given intravascular ultrasound (IVUS). Correlation analysis was made between quantitative analysis of coronary stenosis (QCA), IVUS and SB. RESULTS: The minimum diameter of the stent before posterior dilatation [(2.72 ± 0.35) mm vs. (2.42 ± 0.39) mm] and the maximum stent diameter [(3.26 ± 0.37) mm vs. (3.09 ± 0.38) mm] (2.99 ± 0.36) mm vs. (2.76 ± 0.43) mm], and the stent eccentricity index (0.17 ± 0.04 vs.0.22 ± 0.06) decreased significantly with statistical significance ( P <0.001). The correlation between IVUS and SB in the stent was 0.979, P <0.0001. The correlation between quantitative analysis of coronary stenosis and SB was r = 0.973, P <0.0001. The correlation between QCA and IVUS was 0.964, P <0.0001 . CONCLUSIONS: SB has a good correlation with IVUS, and has clinical value in evaluating stent placement and guiding post-high-pressure balloon dilatation.