Median and spatial low-pass filtering in ultrasonic computed tomography.
To reduce noise- and reconstruction-related artifacts in ultrasound computed tomography, the use of combined median and Hamming-weighted spatial low-pass filtering is evaluated. The evaluation of the reconstruction filters uses both computer-generated projections of a known object with the least mean-square error criterion as well as a more subjective evaluation of conventional ultrasonic attenuation and speed of sound images.
D001940:Breast / Q000033:anatomy & histology; D003201:Computers; D006801:Humans; D008961:Models, Structural; D014054:Tomography / Q000379:methods*; D014463:Ultrasonography / Q000379:methods*