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Proceedings Paper

Nonlinear Parameter Tomography, Active Incoherent Imaging And Adaptive Imaging For Ultrasonic Tissue Characterization
Author(s): Takuso Sato; Makoto Hirama; Takayoshi Yokota; Nobuyuki Ichida
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Paper Abstract

In this paper, three new ultrasonic iaginc, techniques aiming at more exact characterization of tissue are presented. First, new ton ographic imaging system of nonlinear parameter B/A is proposed. Scanning low frequency pumping waves and high frequency probing waves are used. Several images of biological objects and their interpretation are given. Second, a method of active incoherent imaging which is effective both for diffusive and specular objects is shown. A scanning transmitter and array reciever and 2-D nonlinear spectral estimation are used. Finally, an active adaptive imaging method through an unknown inhomogeneous layer is given. It is based on the eigen vector decomposition of the recieved data matrix. The degree of focusing is judged and the best beam is formed. Experimental results are shown as well as numerical results.

Paper Details

Date Published: 1 November 1982
PDF: 6 pages
Proc. SPIE 0375, Medical Imaging and Image Interpretation, (1 November 1982); doi: 10.1117/12.934684
Show Author Affiliations
Takuso Sato, Tokyo Institute of Technology (Japan)
Makoto Hirama, Tokyo Institute of Technology (Japan)
Takayoshi Yokota, Tokyo Institute of Technology (Japan)
Nobuyuki Ichida, Tokyo Institute of Technology (Japan)

Published in SPIE Proceedings Vol. 0375:
Medical Imaging and Image Interpretation
Judith M. S. Prewitt, Editor(s)

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