T. Kling et al., REVERBERATION REDUCTION IN ULTRASONIC B-MODE IMAGES VIA DUAL-FREQUENCY IMAGE SUBTRACTION, IEEE transactions on medical imaging, 12(4), 1993, pp. 792-802
Citations number
18
Categorie Soggetti
Engineering, Biomedical","Radiology,Nuclear Medicine & Medical Imaging
The aim of this paper is to demonstrate the feasibility of an approach
: dual-frequency subtraction imaging, for suppressing artifacts produc
ed by reverberation of strong echoes among specular reflectors. This m
ethod is based upon the principle that specularly reflected echoes fro
m fiat boundaries are frequency-independent whereas the diffusely scat
tered echoes from small scatterers are frequency-dependent. The approa
ch was assessed on phantoms including one consisting of two parallel p
lastic plates between layers of foam sponges using a prototype experim
ental system. Preliminary results show that this method is superior to
simple thresholding techniques or signal compression and holds great
promise for suppressing reverberation artifacts in ultrasonic images.