支架影像增强显影技术指导冠状动脉支架球囊后扩张的辐射剂量

Radiation dose to patients undergoing balloon post-expansion for coronary Stent-Boost subtract

目的:评价支架影像增强显影技术在冠状动脉介入中指导球囊后扩张射线剂量研究。方法:按照1:1随机入组分为支架影像增强显影技术(Stent-Boost subtract,SBS)组和冠状动脉造影(coronaryangiography,CAG)组。比较2组术后即刻管腔获得直径、支架偏心指数及射线剂量。结果:SBS组支架后扩张比例、支架偏心指数明显优于CAG组(P<0.05),2组间射线剂量差异无统计学意义(P>0.05)。结论:SBS能够在不增加射线辐射量的情况下明显提高支架的可视性,指导支架后扩张,且不增加手术时间及费用。

Objective: To evaluate the application of enhanced stent imaging in guiding the dose study of retrobulbar dilatation radiation in coronary intervention. Methods: The patients were 1:1 randomly divided into a Stent- Boost subtract (SBS) group and a coronary angiography (CAG) group. The diameter of the lumen, the eccentricity index of the stent and the dose of radiation were compared between the two groups immediately after operation. Results: The dilatation ratio and eccentricity index of stent in SBS group were significantly better than those in CAG group (P<0.05). There was no significant difference in radiation dose between the two groups (P>0.05). Conclusion: SBS can significantly improve the visibility of stents without increasing the radiation dose, guide the expansion of stents, and do not increase the operation time and cost.