目的评价经胸多普勒超声心动图技术（TTDE）检测冠状动脉左前降支近、中段高度狭窄的准确性。
Objective To evaluate the accuracy of detecting high degree stenosis of proximal or mid-left anterior descending coronary artery(LAD) by transthoracic Doppler echocardiography(TTDE).
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.
目的应用经胸脉冲多普勒超声心动图(PDE)测定高血压病人的冠脉血流储备功能(CFR)。
Purpose To determine coronary flow reserve (CFR) in patients with essential hypertension by transthoracic pulsed Doppler echocardiography (PDE).
目的探讨经胸壁多普勒超声心动图(TTDE)对冠状动脉远端血流检测的可行性。
Objective To evaluate the feasibility of transthoracic Doppler echocardiography (TTDE) for noninvasive detection of distal coronary flow.
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.
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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