Assessment of Left Ventricular Torsion in Short Axis View between Healthy Subjects and Significant Coronary Artery Disease Patients

AUTHORS

Zahra Arab 1 , Manijhe Mokhtari-Dizaji 1 , * , Faride Roshanali 2 , Hassan Moladoust 3

AUTHORS INFORMATION

1 Department of Medical Physics, Tarbiat Modares University, Tehran, Iran

2 Department of Cardiology, Dey General Hospital, Tehran, Iran

3 Department of Medical Physics, Guilan Medical Sciences University, Rasht, Iran

ARTICLE INFORMATION

Zahedan Journal of Research in Medical Sciences: 15 (9); e92857
Published Online: February 02, 2013
Article Type: Research Article
Received: October 09, 2012
Revised: November 21, 2012
Accepted: January 12, 2013

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Abstract

Background : Coronary artery disease causes changes in biomechanical parameters and function of myocardial. Recently, torsion angle is one of the most important mechanical parameters. Therefore in this study, torsion angle in healthy subjects and LAD significant coronary artery disease patients, using echo tracking method in short axis view, was evaluated.
Materials and Methods : In cross sectional study, 14 healthy subjects and 10 patients with significant stenosis of LAD were evaluated. Two dimensional echocardiography images were scanned in apical and basal parasternal short axis view were recorded. Successive ultrasonic images were processed by echo tracking under block matching algorithm and peak torsion angle were estimated. Difference between healthy group and patient group were extracted by using peak torsion angle by the confidence level of 95%.
Results : In this study, basal rotation angle, apical rotation angle and torsion angle in short axis view in significant coronary artery disease patients significantly decreased 33%, 44% and 38% relative to healthy subjects, respectively. Also time to reach peak torsion angle in LAD coronary artery stenosis patients increased 19% relative to healthy group.
Conclusion : It seems, torsion angle in short axis view, can diagnose LAD coronary artery stenosis patients reative to healthy subject. 

Keywords

Echocardiography Heart torsion angle Atherosclerosis

© 2013, Zahedan Journal of Research in Medical Sciences. This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/) which permits copy and redistribute the material just in noncommercial usages, provided the original work is properly cited.
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