目的：探讨经胸及经食道彩色多普勒超声心动图在诊断主动脉窦瘤破裂的应用价值。

Objective: To study the application value of transthoracic or trans-esophagus color Doppler echocardiography on diagnosing rupture of aortic sinus aneurysm.

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目的：探讨经胸彩色超声心动图在膜部瘤形 室间隔缺损（VSD）介入治疗术前超声分型的临床应用价值。

Objective: To investigate the clinical application value of transthoracic color ultrasonic cardiogram in typing of membranous tuberiform ventricular septal defect(VSD) before interventional occlusion.

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目的：探讨经胸彩色多普勒超声心动图在急性肺动脉栓塞诊断中的应用价值。

Objective: To assess diagnostic application of color Doppler echocardiogram for acute pulmonary embolism.

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