1. Changes in Left Ventricular Function After Mitral Valve Repair for Severe Organic Mitral Regurgitation 
Tomasz G. Witkowski, MD, James D. Thomas, MD, PhD, Victoria Delgado, MD, PhD, Eva van Rijnsoever, MS, Arnold C.T. Ng, MBBS, Ulas Hoke, MD, See H. Ewe, MBBS, Dominique Auger, MD, Kai H. Yiu, MBBS, Eduard R. Holman, MD, PhD, Robert J.M. Klautz, MD, PhD, Martin J. Schalij, MD, PhD, Jeroen J. Bax, MD, PhD, Nina Ajmone Marsan, MD, PhD 
The Annals of Thoracic Surgery 
Volume 93, Issue 3, Pages (March 2012)
DOI: /j.athoracsur
Copyright © 2012 The Society of Thoracic Surgeons Terms and Conditions

2. Fig 1
Assessment of left ventricular (LV) global longitudinal and circumferential strain by speckle tracking analysis. (A) From the apical four-chamber view, the myocardium is divided into six standard segments. Longitudinal shortening (negative strain) is calculated for each segment over the cardiac cycle, and the mean of the six segments is displayed (white dotted line). The measurements are repeated for the apical two-chamber and three-chamber views, and LV global longitudinal systolic strain is calculated as the average peak longitudinal strain. (B) From the parasternal short axis view at the level of papillary muscles, the myocardium is divided into six standard segments. Circumferential strain (negative strain) is measured for each separate segment, and LV global circumferential systolic strain is calculated as the average peak circumferential strain.
The Annals of Thoracic Surgery  , DOI: ( /j.athoracsur )
Copyright © 2012 The Society of Thoracic Surgeons Terms and Conditions