摘要
本文采用自回归模型得到肝脏组织不同区域的超声结构散射频谱，并对其频谱特征进行了统计分析。实验和分析结果表明：肝脏可分为三个特征散射区域，即近似的瑞利散射区、随机散射区及扩散漫射区；肝脏组织结构散射表现的区域分布特征是与其结构分布特征、散射相关长度分布相一致的。这为利用区域散射谱特征进行组织辨别提供了可能性。
In this paper, the ultrasonic spectra of liver's structural scattering were obtained by using autoregressive model, and the spectral characteristics were analyzed statistically. The results indicate that a liver can be divided into three distinguished scattering region. Refered to the microstructural characteristics of liver,s different parts, the results were discussed. And finally, the application prospect of spectral characteristics of tissue's regional structural scattering in clinic is pointed out.
出处
《声学学报》
EI
CSCD
北大核心
1996年第4期693-699,共7页
Acta Acustica
基金
国家自然科学基金
