Objective to investigate the application of pulsed-wave Doppler tissue imaging (PW-DTI) in evaluating left ventricular systolic and diastolic function in patients with chronic heart failure (CHF).

目的：探讨脉冲多普勒组织成像(PW DTI)技术在评价慢性心力衰竭(CHF)左室舒缩功能方面的应用。

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Objective: to determine clinical value of pulsed wave Doppler tissue imaging (PW-DTI) in evaluating aortic elasticity in coronary heart disease.

目的：探讨脉冲波多普勒组织成像(PW - DTI)在评价冠心病患者主动脉弹性时的应用价值。

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Objective To investigate the characteristics of right ventricular wall motion by the pulsed wave Doppler tissue imaging (PW-DTI).

目的应用脉冲多普勒组织成像（PW DTI）分析正常右室心肌舒缩运动的特点。

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