Digital image focussing in the near field of a sampled acoustic aperture

F. Duck; S. Johnson; J. Greenleaf; W. Samayoa

doi:10.1016/0041-624X(77)90070-1

Digital image focussing in the near field of a sampled acoustic aperture

F. Duck, S. Johnson, J. Greenleaf, W. Samayoa

Physiology & Biomedical Engineering

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

A study has been carried out to investigate digital techniques which can be used to form fully focussed acoustic images. An algebraic approach was used rather than a Fourier technique. Pulse-echo data was digitized from a 2.4 cm long, 32 element, 3 MHz linear array. Water bath tests have demonstrated azimuthal resolution close to being diffraction limited throughout the field of view. Good images of tissue samples in-vitro have been obtained. Consideration of image sampling requirements and symmetry properties have led to the development of an efficient processing algorithm.

Original language	English (US)
Pages (from-to)	83-88
Number of pages	6
Journal	Ultrasonics
Volume	15
Issue number	2
DOIs	https://doi.org/10.1016/0041-624X(77)90070-1
State	Published - Mar 1977

ASJC Scopus subject areas

Acoustics and Ultrasonics

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10.1016/0041-624X(77)90070-1

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title = "Digital image focussing in the near field of a sampled acoustic aperture",

abstract = "A study has been carried out to investigate digital techniques which can be used to form fully focussed acoustic images. An algebraic approach was used rather than a Fourier technique. Pulse-echo data was digitized from a 2.4 cm long, 32 element, 3 MHz linear array. Water bath tests have demonstrated azimuthal resolution close to being diffraction limited throughout the field of view. Good images of tissue samples in-vitro have been obtained. Consideration of image sampling requirements and symmetry properties have led to the development of an efficient processing algorithm.",

author = "F. Duck and S. Johnson and J. Greenleaf and W. Samayoa",

note = "Funding Information: This work was madep ossibleb y supportin part by NIH research granHtTs-4-2904a ndH L-04664.T he encourage-mento f Dr Earl Wood and the supporto f his associated staff and laboratoryfa cilitiesa reg ratefullya cknowledged.",

year = "1977",

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T1 - Digital image focussing in the near field of a sampled acoustic aperture

AU - Duck, F.

AU - Johnson, S.

AU - Greenleaf, J.

AU - Samayoa, W.

N1 - Funding Information: This work was madep ossibleb y supportin part by NIH research granHtTs-4-2904a ndH L-04664.T he encourage-mento f Dr Earl Wood and the supporto f his associated staff and laboratoryfa cilitiesa reg ratefullya cknowledged.

PY - 1977/3

Y1 - 1977/3

N2 - A study has been carried out to investigate digital techniques which can be used to form fully focussed acoustic images. An algebraic approach was used rather than a Fourier technique. Pulse-echo data was digitized from a 2.4 cm long, 32 element, 3 MHz linear array. Water bath tests have demonstrated azimuthal resolution close to being diffraction limited throughout the field of view. Good images of tissue samples in-vitro have been obtained. Consideration of image sampling requirements and symmetry properties have led to the development of an efficient processing algorithm.

AB - A study has been carried out to investigate digital techniques which can be used to form fully focussed acoustic images. An algebraic approach was used rather than a Fourier technique. Pulse-echo data was digitized from a 2.4 cm long, 32 element, 3 MHz linear array. Water bath tests have demonstrated azimuthal resolution close to being diffraction limited throughout the field of view. Good images of tissue samples in-vitro have been obtained. Consideration of image sampling requirements and symmetry properties have led to the development of an efficient processing algorithm.

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Digital image focussing in the near field of a sampled acoustic aperture

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