The mitral annulus is a pliable junctional zone of fibrous and muscular tissue joining the left atrium and ventricle that anchors the hinge portion of the anterior and posterior mitral leaflets. 1–11 The annulus has two major collagenous structures:(1) the right fibrousJI Fann...
The present study was designed to investigate the dimensions of mitral valve annulus in the presence of mitral regurgitation. Method. Fifty-four patients were examined. On transthoracic echocardiographic images, we performed linear measurements in the parasternal plane in order to define the size of ...
Aortic valve annulus and sinus-tube joint diameters in normal adults of Chinese Han ethnic group 来自 维普期刊专业版 喜欢 0 阅读量: 25 作者: DZQ Zhu 摘要: 背景大动脉的根的解剖价值是重要的因为大动脉的阀门 repair.This 学习是在汉语的健康成年人决定大动脉的阀门体环( AVA )和湾穴试管 ioint (...
Measurements of luminal diameters of the aortic annulus (a), the aortic sinus (b) and the sinotubular junction (c) obtained on a steady-state free precession left ventricular outflow tract view at diastole according to reference [86] Full size image Fig. 11 Cusp-commissure (continuous lines)...
BackgroundThe tricuspid valve annulus (TVA) is a complex three dimensional structure that is non-planar, and is incompletely understood. The dynamics of the normal TVA has not been described in any significant detail, nor has the impact of abnormal right hearts on the TVA been described. This...
The maximal LA volume is achieved during ventricular systole. In a cine acquisition, the maximum volume image can be defined as last image immediately before opening of the mitral valve. Accordingly the minimal LA volume image can be defined as the first image after closure of the mitral valve...
METHODS AND RESULTS: Sheep had 23 radiopaque markers inserted: 7 along the anterior mitral annulus and 16 equally spaced on the AML. True-sized Cosgrove-Edwards flexible, partial band (n=12), rigid, complete St Jude Medical rigid saddle-shaped (n=12), Carpentier-Edwards Physio (n=12), ...
Results The mitral annulus in patients with FMR had a larger area, perimeter, and interpeak span than in normal subjects (P < .001 for all). At mid-systole in normal annuli, area and perimeter reach a minimum, nonplanarity is greatest, and projected shape is least circular. These cyclic ...
As the displacement velocities are greater at the lateral mitral annulus side than at the septal side, different cut-offs have to be chosen [<CitationRef CitationID="CR498" >498</Citation Ref>]. References Paulus WJ, Tschöpe C, Sanderson JE, et al. How to diagnose diastolic heart failu...
This is followed by the rapid motion of the mitral annulus back toward the base of the heart, which also aids filling by simply moving the annulus around the column of the incoming blood (38). Thus, LV torsion or twist is a mechanism for generating stored energy during systole, which is...