Accurate depth-independent determination of acoustic backscatter coefficients with focused transducers.
The accuracy of a method of data reduction for determining acoustic backscatter coefficients was tested using focused transducers and narrow-band pulses. Two phantoms with well-defined scattering properties were the bases of the tests, one having low attenuation and one with tissue-mimicking attenuation. The experimentally determined backscatter coefficients were found to be independent of transducer-to-scattering-volume distance and to agree very well with theoretical values, typically within 10%.
Hall
T J
TJ
Department of Medical Physics, University of Wisconsin, Madison 53706.
Madsen
E L
EL
Zagzebski
J A
JA
Boote
E J
EJ
D000161:Acoustic Stimulation; D004581:Electronics; D014159:Transducers