正常心肌背向散射积分超声组织定征  

Myocardial Ultrasound Tissue Characterization Using Integrated Backscatter in Normal Subjects

作　　者：陈宇翔[1] 钱蕴秋[2] 李军[2] 周晓东[2] 张军[2] 

机构地区：[1]解放军第202医院特诊科,沈阳110003 [2]第四军医大学附属西京医院超声科,西安710032

出　　处：《中国医学影像学杂志》2000年第1期45-47,共3页Chinese Journal of Medical Imaging

摘　　要：目的：研究心肌背向散射积分联机分析的临床价值和影响因素。材料和方法：应用背向散射积分联机分析技术观测４０例正常人各切面、各节段心肌的背向散射积分。结果：心肌背向散射积分呈周期变异，舒张末期最大，收缩末期最小。室间隔背向散射积分周期变异明显低于后壁。心内膜下心肌的周期变异大于心外膜下心肌。室间隔左室面心肌的周期变异大于右室面心肌。左室长轴切面室间隔和后壁心肌有较稳定的背向散射积分和典型的周期变异。结论：背向散射积分联机分析应用简便、客观，在心肌组织定征方面有临床应用价值。Purpose: To study the clinical utility and influence of myocardial integrated ultrasound backscatter. Materials and Methods: On-line analysis of myocardial integrated backscatter (IBS) were prforrned in forty subjects without cardiovascular diseases. Results: Stable integrated backscatter values were available from interventricular septum (IVS) and posterior wall (PW) only at parasternal long-axis view, with the lowest value at end-systole and the highest value at end-diastole. The cyclic variation of IBS(CVIB) of IVS was much smaller than that of PW (p<0.01). The CVIB of inner layer of PW and IVS were higher than that of outer part (p<0.05, p<0.01 respectively). Conclusion: Normal myocardium had stable IBS and typical CVIB. Integrated backscatter could be used for myocardial tissue characterization clinically.

关 键 词：背向散射积分 心肌 组织定征 

分 类 号：R445.1[医药卫生—影像医学与核医学]