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Characterization of the Left Atrial Vortex Flow by Two-Dimensional Transesophageal Contrast Echocardiography Using Particle Image Velocimetry

Authors
 Kyu-Hwan Park  ;  Jang-Won Son  ;  Won-Jong Park  ;  Sang-Hee Lee  ;  Ung Kim  ;  Jong-Seon Park  ;  Dong-Gu Shin  ;  Young-Jo Kim  ;  Jung-Hyun Choi  ;  Helene Houle  ;  Mani A. Vannan  ;  Geu-Ru Hong| 
Citation
 ULTRASOUND IN MEDICINE AND BIOLOGY, Vol.39(1) : 62-71, 2013 
Journal Title
 ULTRASOUND IN MEDICINE AND BIOLOGY 
ISSN
 0301-5629 
Issue Date
2013
MeSH
Atrial Fibrillation/diagnostic imaging ; Atrial Fibrillation/physiopathology ; Atrial Function* ; Contrast Media* ; Echocardiography ; Echocardiography, Transesophageal* ; Female ; Heart Atria/diagnostic imaging* ; Humans ; Male ; Middle Aged ; Myocardial Contraction ; Rheology*
Keywords
Vortex ; Left atrium ; Contrast echocardiography ; Atrial fibrillation
Abstract
This article is the first clinical investigation of the quantitative left atrial (LA) vortex flow by two-dimensional (2-D) transesophageal contrast echocardiography (2-D-TECE) using vector particle image velocimetry (PIV). The aims of this study were to assess the feasibility of LA vortex flow analysis and to characterize and quantify the LA vortex flow in controls and in patients with atrial fibrillation (AF). Thirty-five controls and 30 patients with AF underwent transesophageal contrast echocardiography. The velocity vector was estimated by particle image velocimetry. The morphology and pulsatility of the LA vortex flow were compared between the control and AF groups. In all patients, quantitative LA vortex flow analysis was feasible. In the control group, multiple, pulsatile, compact and elliptical-shaped vortices were seen in the periphery of the LA. These vortices were persistently maintained and vectors were directed toward the atrioventricular inflow. In the AF group, a large, merged, lower pulsatile and round-shaped vortex was observed in the center of the LA. In comparisons of vortex parameters, the relative strength was significantly lower in the AF group (1.624 ± 0.501 vs. 2.105 ± 0.226, p < 0.001). It is feasible to characterize and quantify the LA vortex flow by transesophageal contrast echocardiography in patients with AF, which offers a new method to obtain additional information on LA hemodynamics. The approach has the potential for early detection of the LA dysfunction and in decisions regarding treatment strategy and guiding anticoagulation treatment in patients with AF.
Full Text
http://www.sciencedirect.com/science/article/pii/S0301562912005145
DOI
10.1016/j.ultrasmedbio.2012.08.013
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
Yonsei Authors
Son, Jang Won(손장원)
Hong, Geu Ru(홍그루) ORCID logo https://orcid.org/0000-0003-4981-3304
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/86134
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