Application of dual-source multi-detector computed tomography evaluating target location of trans-coronary sinus devices during percutaneous mitral annulus repair
Zhu Xi
Chen Shasha
Ning Zhongping
Li Xinming
Abstract：Objective To evaluate the accuracy of dual-source multi-detector computed tomography (MDCTA) in evaluating the target location of trans-coronary sinus devices during percutaneous mitral annulus repair.Methods Totally 42 patients planning to receive cardiac resynchronization therapy (CRT) were enrolled.All the patients underwent dual-source MDCTA before CRT and intravenous ultrasound (IVUS) during CRT to measure the diameters of coronary sinus ostium (CSO) and proximal anterior interventricular vein (PAIV),and the distance between CSO and PAIV.The results of dual-source MDCTA and IVUS were analyzed.According to the degree of secondary mitral regurgitation (SMR),the patients were divided into mitral regurgitation (MR) group (SMR≥3 grade) and control group(SMR ≤2 grade); the diameters of CSO and PAIV,and the distance between CSO and PAIV were compared between the two groups.Results The diameters of CSO and PAIV,and the distance between CSO and PAIV measured by dual-source MDCTA and IVUS were not significantly different [(11.40±0.29) mm vs (10.80±0.28) mm,(4.60 ±0.11) mm vs (5.20 ±0.13) mm,(119.40 ± 2.50) mm vs (120.10 ±2.39) mm] (P ＞0.05),and they were linearly correlated (r =0.967,r =0.954,r =0.986,P ＜0.001).For both dual-source MDCTA and IVUS,the diameters of CSO and PAIV in MR group were significantly greater than those in control group [dual-source MDCTA:(12.20 ± 0.30) mm vs (11.20 ± 0.21) mm,(4.90±0.16) mmvs (4.50±0.07) mm,IVUS:(11.70±0.31) mmvs (10.60±0.20) mm,(5.40 ±0.17) mm vs (5.10 ±0.09) mm] (P＜0.05).The distance between CSO and PAIV in MR group was not significantly different compared with that in control group by using both dual-source MDCTA and IVUS (P ＞ 0.05).Conclusion Dual-source MDCTA can quantitatively assess the target location of trans-coronary sinus devices during the percutaneous mitral annulus repair; it may be a good tool for selection of trans-coronary sinus devices for the percutaneous mitral annulus repair.
Keywords：Dual-source multidetector computed tomographyIntravascular ultrasoundMitral regurgitationPercutaneous mitral annulus repairCoronary vein ostium
Publication Date：2015-09-30
Online Publishing Date：2026-09-14(First online date of this platform, not the publication date of the document)
Pages：5( 1282-1286 )