Simulation studies of ultrasonic backscattering and B-mode images of liver using acoustic microscopy data |
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Authors: | Lizzi F L Rorke M C King D L Feleppa E J Kalisz A Sokil-Melgar J B Nowakowski J |
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Affiliation: | Riverside Res. Inst., New York, NY. |
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Abstract: | Data obtained from a scanning laser acoustic microscope (SLAM) were used to examine several aspects of ultrasonic backscattering from the liver. Phase interferograms from normal and abnormal human-liver specimens were digitized, and a series of algorithms was used to compute images of propagation velocity within the specimens. The propagation velocity images were then employed to simulate A- and B-mode results. These initial simulations were used to investigate how ultrasonic echo signals are related to tissue microstructure. Among the topics examined were B-mode speckling, frequency and beamwidth effects, and angulation dependencies. |
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