Study on the establishment of a simplified model of aortic valve by real time three dimensional echocardiography
10.3969/j.issn.1671-8348.2016.36.017
- VernacularTitle:经食管实时三维超声心动图对建立主动脉瓣简化模型的研究
- Author:
Gaoyuan LIU
;
Min LIN
;
Xuegong SHI
- Keywords:
aortic annulus;
real time;
imaging,three-dimensional;
echocardiography,transesophageal
- From:
Chongqing Medicine
2016;45(36):5095-5097,5100
- CountryChina
- Language:Chinese
-
Abstract:
Objective To detect the important parameters of three dimensional structure of the aortic annulus by using real time three dimensional transesophageal echocardiograhy (RT 3D TEE) and analyse morphological and physiological characteristics , in order to establish simplified model of aortic valve and provide references for designing aortic annulus .Methods A total of 95 ca‐ses of healthy individuals carrying out RT 3D TEE were selected ,and the images of total volume of aortic root were collected .The important parameters of three dimensional aortic valve in four cardiac cycles ,including sinus tube junction(S) ,distance between ad‐jacent valve junction(L ,R and N) ,diameter of the circumcircle of triangle(J) ,aortic annulus height(H) ,long diameter(A) ,short di‐ameter(B) and eccentricity ratio (B/A) of the aortic valve ,were measured by using the QLAB7 .0 software .In the 3D imaging ,the extending relationship between the bottom of aortic valve and aortic annulus was analysed ,the structural characteristics of the aortic valve were simplified ,and the model was established .Results The values of the parameters measured at the end‐diastole were as follows :sinus tube junction (26 .3 ± 3 .3)mm ,three‐dimensional aortic annulus height(12 .4 ± 1 .9)mm ,aortic valve long diameter and short diameter (25 .9 ± 2 .7)mm and (19 .8 ± 2 .0)mm ,adjacent valve junction distance(L ,R and N) all was(21 .6 ± 2 .5)mm . These three structures approximately formed an equilateral triangle .The values of the adjacent cycle time ,the change of sinus tube junction ,distance between adjacent valve junction ,aortic annulus height and long diameter were compared ,and there was no statisti‐cal significant differences(P>0 .05) ,while statistically significant differences were found in the aortic valve short diameter and long short diameter between those at the end‐diastole and those at the medium‐systole(P<0 .01) .Conclusion RT 3D TEE can accu‐rately measure the size of each part of the aortic valve and display its shape and change ,which contribute to simplifying and recon‐structing the aortic annlus .
