摘要
肝脏在大血管搏动的激励下会产生运动 ,其运动情况可以反映肝脏硬化的程度。利用M型超声技术检测肝脏的这种运动信息 ,先用相关技术提取M型超声图像中肝脏在腹主动脉激励下的运动包络 ,然后从所得的包络中提取特性参数。在对包络的幅度、标准方差和傅里叶谐波幅度进行分析后 ,得出了判断肝脏是否硬化的参数判别标准。
The liver moves in response to impulses arising from the main blood vessels.The hardness of the liver may be reflected by this kind of movement.The M-mode ultrasound technique is used in this paper to detect the information of livers' motion.The motion envelope of the liver excited by the abdominal aorta is extracted using the correlation technique.Several feature parameters,such as the amplitude,the standard deviation and Fourier harmonics, are extracted from this envelope. The values of parameters were calculated from 19 normal livers and 11 patients' livers, from which the criterion was obtained to decide whether the liver was normal.
出处
《中国医疗器械杂志》
CAS
2001年第5期265-267,共3页
Chinese Journal of Medical Instrumentation
基金
上海市教委重点学科基金资助
