International Circulation: I notice you said that with a smile on your face… so you were one of those non-skeptics in the beginning?
国际循环：我注意到您说话时脸上的笑容。您是否一开始就没有抱怀疑的态度？

Prof. Robert O. Bonow:I was somewhat of a skeptical person in the beginning.  I knew that we could do a balloon valvotomy to expand the value， but that was essentially cracking the calcium deposits and they tended to reform and restenosis with time.  I wasn’t a true believer that one could actually expand a stent inside a calcific aortic valve and in doing so implant a new valve inside the sent that would be successful， but， I’ve been proven wrong.
Prof. Robert O. Bonow: 一开始我是有点怀疑的。我知道我们可以做经球囊瓣膜切开术，但是切开后由于钙化斑的破坏，随着时间的延长会出现改变和再狭窄。我之前也不相信可以在钙化的主动脉瓣内植入支撑架进行扩张，然后在支撑架内植入一个新的瓣膜，但事实证明之前的想法是错误的。

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