儿童心肌背向散射积分的应用研究  

Application of Ultrasonic Integrated Backscatter in Pediatrics

作　　者：徐兆峰[1] 贡欣[2] 齐悦[2] 刘凤英[2] 

机构地区：[1]天津医科大学研究生院,300070 [2]天津市儿童医院超声心动图室,300070

出　　处：《天津医药》2008年第3期189-191,共3页Tianjin Medical Journal

摘　　要：目的:探讨心肌背向散射积分(IBS)在儿童中的应用价值。方法:检测50例正常儿童(对照组)及16例心肌病儿童(心肌病组)基底段前间隔、后间隔、左室侧壁、左室后壁的平均IBS值(AII)和周期变化幅度(CVIB)值。结果:所测心肌4个节段的AII%,各年龄组间及性别间比较差异无统计学意义(均P>0.05)。后壁心包AII>侧壁心包AI(IP<0.05)。各节段心肌AII%接近正态分布。各节段心肌间两两比较,前室间隔与后室间隔、侧壁与后壁AII%差异无统计学意义(均P>0.05)。前室间隔、后室间隔AII%小于侧壁和后壁AII%(均P<0.01)。各节段心肌CVIB比较差异无统计学意义(均P>0.05)。心肌病组与对照组比较,心肌节段AII%明显升高(P<0.05)、CVIB明显下降(P<0.01)、IBS曲线平坦。结论:正常儿童心肌各节段AII%及CVIB值测量可为儿科临床进行各种心肌病变的组织定征及定量分析提供参考依据。心肌病患儿AII%升高、CVIB下降、IBS曲线形态异常。Objective： To study the clinical utility of myocardial integrated ultrasound backscatter in pediatrics. Methods： The subjects included 50 normal and 16 cardiomyopathy children. The average image intensity （AII）and cyclic variation of integrated backscatter （CVIB）with basal anterior septum,basal inferior septum, basal lateral wall and basal inferior wall were tested. Results： The percentages of AII values of basal lateral wall and basal inferior wall were significant higher than those of basal inferior septum and basal anterior septum in control group （P 〈 0.01 ）. There was no significant difference between basal inferior septum and basal anterior septum, basal lateral wall and basal inferior wall （P 〉 0.05 ）. There was no significant difference in CVIB between all of segments （P 〉 0.05 ）. Compared to control group, percentages of AII values were greatly increased （P 〈 0.05 ）, CVIB were greatly decreased in most of segments in cardiomyopathy children （P 〈 0.01 ）. Conclusion： Measurement of percentages of All values and CVIB in normal myocardium can provide reference indexes for tissue characterizing and analyzing quantitatively different of myocardial disease in pediatric clinical practice. It can be found that increased percentages of AII values,reduced CVIB and abnormal curve character in cardiomyopathy children.

关 键 词：超声心动描记术 心肌疾病 儿童 背向散射积分 

分 类 号：R363.22[医药卫生—病理学] R153.2[医药卫生—基础医学]