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Abstract：
The functional aortic annulus represents a sound clinical framework for understanding the components of the aortic root complex. Recent three-dimensional imaging analysis has demonstrated that the aortic annulus frequently is elliptical rather than circular. Comprehensive three-dimensional quantification of this aortic annular geometry by transesophageal echocardiography and/or multidetector computed tomography is essential to guide precise prosthesis sizing in transcatheter aortic valve replacement to minimize paravalvular leak for optimal clinical outcome. Furthermore, three-dimensional transesophageal echocardiography accurately can quantify additional parameters of the functional aortic annulus such as coronary height for complete sizing profiles for all valve types in transcatheter aortic valve replacement. Although it is maturing rapidly as a clinical imaging modality, its role in transcatheter aortic valve replacement is seen best as complementary to multidetector computed tomography in a multidisciplinary heart team model.
摘要：
功能性主动脉瓣环代表了理解主动脉根复合体成分的良好临床框架。最近的三维成像分析表明，主动脉瓣环通常是椭圆形而不是圆形。通过经食道超声心动图和/或多探测器计算机断层扫描对主动脉瓣环几何形状进行全面的三维量化对于指导经导管主动脉瓣置换术中的精确假体尺寸以最大程度地减少瓣周漏以获得最佳临床结果至关重要。此外，经食管三维超声心动图可准确量化功能性主动脉瓣环的其他参数,如冠状动脉高度,以实现经导管主动脉瓣置换术中所有瓣膜类型的完整尺寸轮廓.尽管它作为一种临床成像方式正在迅速成熟，在多学科心脏团队模型中,其在经导管主动脉瓣置换术中的作用被认为是与多探测器计算机断层扫描的最佳补充.
