Ultrasonic wave propagation in stereo-lithographical bone replicas.
Predictions of a modified anisotropic Biot-Allard theory are compared with measurements of pulses centered on 100 kHz and 1 MHz transmitted through water-saturated stereo-lithographical bone replicas. The replicas are 13 times larger than the original bone samples. Despite the expected effects of scattering, which is neglected in the theory, at 100 kHz the predicted and measured transmitted waveforms are similar. However, the magnitude of the leading negative edge of the waveform is overpredicted, and the trailing parts of the waveforms are not predicted well. At 1 MHz, although there are differences in amplitudes, the theory predicts that the transmitted waveform is almost a scaled version of that incident in conformity with the data.
Aygün
Haydar
H
Medical Physics, Post-Graduate Medical Institute, The University of Hull, Cottingham Road, Hull HU6 7RX, United Kingdom.
Attenborough
Keith
K
Lauriks
Walter
W
Langton
Christian M
CM
D000465:Algorithms; D001842:Bone and Bones / Q000000981:diagnostic imaging*; D003198:Computer Simulation; D005270:Femur Head / Q000000981:diagnostic imaging; D006801:Humans; D007085:Ilium / Q000000981:diagnostic imaging; D008159:Lumbar Vertebrae / Q000000981:diagnostic imaging; D008954:Models, Biological; D014463:Ultrasonography; D014867:Water
D014867:Water