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冠状动脉支架的引进使经皮腔内成形术的疗效有了提高 ,但是术后血管内的再狭窄又限制了它的进一步应用。世界各国科学家做了２００多个独立的试验来寻找降低血管内再狭窄的方法 ,发现腔内近距离放射治疗对抑制再狭窄有一定的疗效。血管腔内放疗抑制再狭窄可分为固体源和液体球
The introduction of coronary stents has led to improved efficacy of percutaneous transluminal angioplasty, but restenosis after surgery has limited its further use. More than 200 independent experiments have been conducted by scientists from all over the world to find ways to reduce the restenosis in blood vessels. We found that brachytherapy is effective in inhibiting restenosis. Endovascular treatment of vascular restenosis can be divided into solid source and liquid ball