objectiveto investigate the clinical significance of acoustic densitometry (ad) technology evaluating myocardium changes in patients with rheumatic heart disease.
目的:探讨声学密度定量(ad)技术评价风湿性心脏病患者心肌病变的临床意义。
objective:to have an acoustic densitometry (ad)analysis about the relationship between doses and effects in experiment rabbit liver with second harmonic contrast imaging.
目的:利用实验性兔肝对二次谐波成像中的剂量-效应关系进行声学定量分析。
purpose: to evaluate the clinical value of tissue doppler imaging (tdi), color kinesis(ck) and acoustic densitometry (ad) in the assessment of non-infarcted regional myocardial function.
目的:采用组织多谱勒成像(tdi)、彩色室壁运动分析(ck)及声学密度测定(ad)评价心梗患者非梗塞区心肌功能的改变。