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60 三维经食管超声心动图在先天性心脏病的诊断和经导管治疗中的应用 761

频和/或图像分辨率。尽管如此，对于3D成像不好的小缺损（如瓣周漏或小室间隔缺损）
的定位是非常有用的。

60.3 结论

三维经食管超声心动图为术前评估间隔和瓣膜病变以及术中引导经皮导管封堵提
供了有价值的信息。在过去的几年里，重大的技术进步已经克服了它最初的许多限制，
并使其成为传统二维超声心动图的标准辅助方法。

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