Mercury sphygmomanometer (MSM) is reliable and widely used in clinics and hospitals. The principle of Korotkoff sounds m......

目的：应用二维斑点追踪成像技术观察射血分数正常的舒张性心力衰竭患者左室内外层心肌旋转特点，评价DHF患者内外层心肌收缩功能。方......