Evaluation of mitral chordae tendineae length using four-dimensional computed

作     者：Takuya Mori Satoshi Matsushita Terumasa Morita Abulaiti Abudurezake Junji Mochizuki Atsushi Amano 

作者机构：Department of Cardiovascular SurgeryJuntendo University Faculty of MedicineTokyo 113-8421Japan Department of Cardiovascular SurgeryJACCT Japan Animal Cardiovascular Care TeamOsaka 533-0033Japan Department of RadiologyMinamino Cardiovascular HospitalTokyo 192-0918Japan 

出 版 物：《World Journal of Cardiology》 (世界心脏病学杂志（英文版）（电子版）)

年 卷 期：2024年第16卷第5期

页      面：274-281页

学科分类：1002[医学-临床医学] 100210[医学-外科学(含：普外、骨外、泌尿外、胸心外、神外、整形、烧伤、野战外)] 10[医学] 

主　　题：Mitral valve Chordae tendineae Computed tomography Four-dimensional Cardiac cycle 

摘      要：BACKGROUND Mitral valvuloplasty using artificial chordae tendineae represents an effective surgical approach for treating mitral *** precise measurements of artificial chordae tendineae length(CL)is an important factor in the procedure;however,no objective index currently exists to facilitate this ***,preoperative assessment of CL is critical for surgical planning and ***-dimensional x-ray micro-computed tomography(4D-CT)may be useful for accurate CL measurement considering that it allows for dynamic three-dimensional(3D)evaluation compared to that with transthoracic echocardiography,a conventional inspection *** To investigate the behavior and length of mitral chordae tendineae during systole using *** Eleven adults aged70 years without mitral valve disease were evaluated.A 64-slice CT scanner was used to capture 20 phases in the cardiac cycle in electrocardiographic *** length of the primary chordae tendineae was measured from early systole to early diastole using the 3D *** primary chordae tendineae originating from the anterior papillary muscle and attached to the A1-2 region and those from the posterior papillary muscle and attached to the A2-3 region were designated as cA and cP,*** behavior and maximum lengths[cA(ma),cP(max)]were compared,and the correlation with body surface area(BSA)was *** In all cases,the mitral anterior leaflet chordae tendineae could be *** most cases,the cA and cP chordae tendineae could be measured *** mean cA(max)and cP(max)were 20.2 mm±1.95 mm and 23.5 mm±4.06 mm,***(max)was significantly *** correlation coefficients(r)with BSA were 0.60 and 0.78 for cA(max)and cP(max),*** cA and cP exhibited constant variation in CL during systole,with a maximum 1.16-fold increase in cA and a 1.23-fold increase in cP from early to *** cP,CL reached a plateau at 15%and remaine