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.
出处
《中国医学影像学杂志》
CSCD
2000年第1期45-47,共3页
Chinese Journal of Medical Imaging
关键词
背向散射积分
心肌
组织定征
Integrated backscatter myocardium Tissue characterization
