Elimination of diffraction error in acoustic attenuation estimation via axial beam translation.
Optimized wideband attenuation estimations were performed on a tissue mimicking phantom in a water tank with and without axial beam translation (ABT), and the results were compared to those from standard substitution measurements. A -17 percent discrepancy between the results of the substitution method and the optimized estimation without ABT was noted in the far field. This discrepancy was eliminated when ABT was utilized.
Ophir
J
J
Department of Radiology, University of Texas Medical School, Houston 77030.
Mehta
D
D
D008961:Models, Structural; D012815:Signal Processing, Computer-Assisted; D014463:Ultrasonography