Figure 1From: Left ventricular strain and strain rate by 2D speckle tracking in chronic thromboembolic pulmonary hypertension before and after pulmonary thromboendarterectomy For 2D speckle tracking, a R.O.I. was selected at the level of the papillary muscles. The myocardium was divided into 6 segments in accordance with the standard 16 segment left ventricular model.Back to article page