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Optical Engineering

Ultrasonic imaging using the Doppler effect caused by a moving transducer
Author(s): Keinosuke Nagai; James F. Greenleaf
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Paper Abstract

An imaging method using the Doppler effect is proposed in this paper. An object is illuminated by a sinusoidal wave from a linearly moving transducer. The frequency components of the reflected wave can be considered to be projections along lines at specified corresponding angles from the transducer. One can reconstruct images by applying conventional CT (computerized tomography) algorithms to the projections thus obtamed. The theory is derived for coherent and incoherent processing. Theoretical results are confirmed by numerical simulations. Experimental results show that coherent Doppler tomography is much higher in resolution but more noisy than incoherent Doppler tomography.

Paper Details

Date Published: 1 October 1990
PDF: 6 pages
Opt. Eng. 29(10) doi: 10.1117/12.55709
Published in: Optical Engineering Volume 29, Issue 10
Show Author Affiliations
Keinosuke Nagai, Univ. of Tsukuba (Japan)
James F. Greenleaf, Mayo Clinic and Foundation (United States)

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