Characterization of splenic structure in Hodgkin disease by using narrow-band filtration of backscattered ultrasound

Prospects for ultrasonic spectroscopy and spectral imaging of abdominal tissues

“…Studies of a phantom with a simulated lesion of altered scattering characteristics indi· I t has been well established that scattering from tissue scattering centers is a function of fre· quency, with frequency dependence being a function of the size, shape and elastic properties of the individual scatterers. 1 The radiofrequency (RF) echo spectrum of backscattered ultrasonic beam encodes information on the frequency dependence of tissue scatterers and has been studied extensively as a tool for noninvasive description of tissue scattering characteristics for a variety of human tissues in vivo?- 6 Conventional gray scale ultrasonography employs broadband ultrasonic waveform data and cated potential for improved lesion detection and characterization, using custom circuitry developed for variable bandwidth filtering of received ultrasonic beams. The techniques discussed have potential for improved diagnosis of diffuse and focal abdominal abnormalities over that obtained with conventional ultrasonic imaging.…”