Cirrhosis: US images with narrow band filtering.
Cirrhosis: US images with narrow band filtering.
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肝硬化：具有窄带滤波的美国图像。
DOI：
10.1148/radiology.165.2.3310096
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发表时间：
1987
期刊：
影响因子：
19.7
通讯作者：
Chen,HS
中科院分区：
文献类型：
--
作者：
Sommer,G;Stern,R;Chen,HS
在对超声信号进行窄带数字滤波并绘制过滤后的超声包络幅值之前，首先将未经滤波的反向散射超声幅值记录到标准动态范围，从而创建了一种新型超声（US）图像。与未经滤波的图像不同，通过窄带数字滤波产生的图像可以区分具有不同散射特征的幻影和体内正常和肝硬化的人肝脏。正常肝与肝硬化影像统计差异有统计学意义(P <。002)在初步临床试验中得到证实。
A new type of ultrasound (US) image was created by first recording unfiltered, backscattered ultrasonic amplitudes to a standard dynamic range prior to narrow band digital filtration of the ultrasonic signal and mapping of the resultant filtered ultrasonic envelope amplitudes. Unlike unfiltered images, those created by narrow band digital filtration permit differentiation between phantoms with different scattering characteristics and normal from cirrhotic human liver in vivo. Significantly different image statistics for normal and cirrhotic liver (P less than .002) were demonstrated in preliminary clinical trials.