Objective: to improve the diagnostic rate of pulmonic stenosis using two dimensional and Doppler echocardiography and to reduce the rate of misdiagnosis.
目的：提高二维及多普勒超声对肺动脉口狭窄的诊断正确率，降低漏诊率。
Methods The left ventricular systolic and diastolic function of patients was evaluated using two-dimensional and pulse Doppler echocardiography by DSE.
方法采用二维、脉冲式多普勒超声检测DSE患者左室收缩和舒张功能。
EDV, ESV, and LVEF were calculated using Simpson's rule algorithm for monoplane LV angiography, using M-mode method for two-dimensional echocardiography.
左室造影采用单平面法(辛普森法则)，二维超声心动图采用M型超声获得EDV、ESV和LVEF。
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