CHARACTERIZATION OF THE LEFT ATRIAL VORTEX FLOW BY TWO-DIMENSIONAL TRANSESOPHAGEAL CONTRAST ECHOCARDIOGRAPHY USING PARTICLE IMAGE VELOCIMETRY

Title
CHARACTERIZATION OF THE LEFT ATRIAL VORTEX FLOW BY TWO-DIMENSIONAL TRANSESOPHAGEAL CONTRAST ECHOCARDIOGRAPHY USING PARTICLE IMAGE VELOCIMETRY
Author(s)
박종선박규환[박규환]이상희김웅신동구김영조최중현[최중현]Helene Houle[Helene Houle]Mani A. Vannan[Mani A. Vannan]홍그루[홍그루]손장원박원종[박원종]
Keywords
LEFT-VENTRICLE; FLUID-MECHANICS; FIBRILLATION; DOPPLER; QUANTIFICATION; PREVALENCE; DYNAMICS; PATTERNS; RISK
Issue Date
201301
Publisher
ELSEVIER SCIENCE INC
Citation
ULTRASOUND IN MEDICINE AND BIOLOGY, v.39, no.1, pp.62 - 71
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. (E-mail: grhong@ynu.ac.kr) (C) 2013 World Federation for Ultrasound in Medicine & Biology.
URI
http://hdl.handle.net/YU.REPOSITORY/26770http://dx.doi.org/10.1016/j.ultrasmedbio.2012.08.013
ISSN
0301-5629
Appears in Collections:
의과대학 > 내과학교실 > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE