声学密度定量评价老年肾功能不全的心肌改变

目的　探讨声学密度定量技术对老年慢性肾功能不全病人心肌改变的临床应用价值。方法　正常组 32例 ,慢性肾功能不全组 38例 ,分别进行超声背向散射积分 (IBS)、二次谐波 (SHI)和声学密度定量 (AD)检查。结果　 Loop方法显示 :正常组与异常组的左室前壁心肌声学密度曲线整体水平高于正常者 ;两种触发方式 IBS和 SHI曲线 :峰值和曲线下面积收缩期整体略高于舒张期 ,异常组均较正常组峰值和曲线下面积显著增高 (Ppd<0 .0 5,Pacu<0 .0 5)。结论　老年慢性肾功能不全病人心肌病理学改变的声学密度定量心肌超声组织定征是一种识别力高、相对无创、诊断有效而可靠的检测手段 ,降低了人为差异。

Clinical study on myocardial tissue ultrasound characterization in old renal inadequacy with acoustic densitometry

Objective To assess whether acoustic densitometry would improve myocardial tissue ultrasound characterization for evaluating in old renal inadequacy Methods In 32 old male control persons and 38 patients with renal inadequacy compared by quantitative assessment of Acoustic Densitometry of myocardial ultrasound imaging Results the peak intensity,the area under the curve were significantly higher than the control group ( P <0 05) Conclusions The recent availabity of Acoustic Densitometry helps to distinguish between normal and abnormal myocardial microstructure and should help to reduce operator variability