Lesion contrast enhancement in medical ultrasound imaging

被引：53

作者：

Stetson, PF

Sommer, FG

Macovski, A

机构：

[1] STANFORD UNIV,DEPT ELECT ENGN,STANFORD,CA 94305

[2] STANFORD UNIV,MED CTR,DEPT DIAGNOST RADIOL,STANFORD,CA 94305

来源：

IEEE TRANSACTIONS ON MEDICAL IMAGING | 1997年 / 16卷 / 04期

关键词：

frequency dependence of ultrasonic backscatter; frequency-diversity ultrasonic imaging; grayscale mapping;

D O I：

10.1109/42.611351

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

Methods for improving the contrast-to-noise ratio (CNR) of low-contrast lesions in medical ultrasound imaging are described, Differences in the frequency spectra and amplitude distributions of the lesion and its surroundings can be used to increase the CNR of the lesion relative to the background, Automated graylevel mapping is used in combination with a contrast-weighted form of frequency-diversity speckle reduction, in clinical studies, the techniques have yielded mean CNR improvements of 3.2 dB above ordinary frequency-diversity imaging and 5.6 dB over sharper conventional images, with no postprocessing graylevel mapping.

引用

页码：416 / 425

页数：10

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