A study of aortic annulus dimension measured by real time three dimensional transesophageal echocardiography in transcatheter aortic valve implantation

VernacularTitle:三维超声测量经导管主动脉瓣植入术患者主动脉瓣环径的研究
Author: Xin WEI ; Liping CHEN ; Mao CHEN ; Yuan FENG ; Zhengang ZHAO ; Hong TANG
Publication Type:Journal Article
Keywords: Echocardiography,transesophageal; Aortic valve stenosis; Heart valve prosthesis implantation
From: Chinese Journal of Ultrasonography 2014;23(3):185-189
CountryChina
Language:Chinese
Abstract: Objective To study the feasibility and accuracy of real-time three-dimensional transesophageal echocardiography (RT 3D-TEE) in measuring the aortic annulus dimension(AAD),and compared with CT measurements.Methods The AAD was measured by transthoracic echocardiography (TTE),transesophageal echocardiography(TEE) and RT 3D-TEE in 26 cases who were refered to our center for transcatheter aortic valve implantation(TAVI).Cross-sectional RT 3D-TEE can offer the AAD derived from the aortic annulus area,the maximal AAD,the minimal AAD and the eccentric index(the maximal AAD/the minimal AAD).The echo dimensions were compared with the CT measurements.Results No statistically significant differences were found between RT 3D-TEE and CT,and they have the best correlation(r =0.92,P ＜ 0.05).Meanwhile,There was no statistically significant difference in the eccentric index of the AAD between RT 3D-TEE and CT(1.25± 0.12 vs 1.28± 0.13,P ＞0.05).Conclusions RT-3D TEE imaging not only measure the AAD accurately,but also provide the maximal AAD,minimal AAD and the eccentric index for TAVI.