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单纯经皮冠脉血管成形术 (ＰＴＣＡ)最大的缺陷是术后再狭窄 ,发生率高达 30 %～ 5 0 %。血管内放射治疗是近年发展起来的防治再狭窄的有效手段。目前其照射方法大致有以下几种 :放射性导丝、放射性液体充盈球囊和放射性支架。放射性液体充盈球囊是将放射性液体注入球囊 ,达到
Simplex percutaneous coronary angioplasty (PTCA) the biggest drawback is the restenosis after surgery, the incidence of up to 30% ~ 50%. Intravascular radiation therapy is an effective measure to prevent restenosis developed in recent years. At present, there are roughly the following methods of irradiation: radioactive guide wire, radioactive fluid filled balloons and radioactive stent. Radioactive fluid filled balloon is injected into the balloon to reach the radioactive liquid