Figure 2, 3 , 4 Pathophysiological mechanism in PAH, Right ventricle Global Longitudinal Strain, Right Ventricle Free Wall Longitudinal Strain.

figure that describes pathophysiological mechanism in PAH , image from authors personal archive该示意图用于描述肺动脉高压（Pulmonary Arterial Hypertension, PAH）的病理生理机制，图片取自作者个人存档。