Ultrasonic 3-dimensional range-variant inverse filtering in near-field range of array transducer

One aim of recent ultrasonic tissue characterization is the quantitative imaging of tissue acoustic parameters. In order to obtain a straightforward image of physical constants the range-variant acoustic field characteristics, such as grating lobe, prefocused beam and diffraction effect due to the f...

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Bibliographic Details
Published in:JPN J APPL PHYS PART 1 REGUL PAP SHORT NOTE REV PAP 1996, Vol.35 (5B), p.3117-3120
Main Authors: KIMIZUKA, K, YAGI, S.-I
Format: Article
Language:English
Subjects:
Acoustical measurements and instrumentation
Acoustics
Biological and medical sciences
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Investigative techniques, diagnostic techniques (general aspects)
Medical sciences
Miscellaneous. Technology
Physics
Ultrasonic investigative techniques
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Summary:One aim of recent ultrasonic tissue characterization is the quantitative imaging of tissue acoustic parameters. In order to obtain a straightforward image of physical constants the range-variant acoustic field characteristics, such as grating lobe, prefocused beam and diffraction effect due to the finite aperture on the array transducer have to be corrected. We propose 3-dimensional range-variant Gaussian shaped inverse filtering by digital signal processing of complex echoes as a means of correcting these characteristics in the near-field range of an ordinary array transducer .
ISSN:0021-4922
1347-4065
DOI:10.1143/JJAP.35.3117