Objective To examine whether transesophageal echocardiography (TEE) is better than transthoracic echocardiography(TTE) in the detection of partially ruptured mitral chordae tendineae(PRMCT).

• 目的比较经胸超声心动图(TTE)及经食管超声心动图(TEE)对二尖瓣腱索部分断裂的诊断价值，探讨TEE对该病的探测方法及其声像学特征。