Computed transmission ultrasound tomography

James F Greenleaf, J. J. Gisvold, R. C. Bahn

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Beginning with the wave equation, the authors have derived the classic reconstruction equations, which assume the ultrasonic energy travels in a straight line. The straight line reconstruction methods result in images that are not absolutely quantitative, although they may be useful in delineating speed and attenuation within two-dimensional cross sections, especially in organs such as the breast. Aberrations associated with straight-line reconstruction images are results of the effects of refraction and of diffraction. In addition, these methods assume that the acoustic wave travels within a plane and not in three dimensions; thus the assumed dimensionality of the problem also gives aberrations in the final image. The effects of diffraction are very complex and, given the current methods of measuring arrival time and amplitude, cause aberrations in the image, which result in errors both in geometry and in magnitude of the reconstructed values. Correction of diffraction effects with techniques termed 'diffraction tomography' are being investigated and have resulted in some preliminary data.

Original languageEnglish (US)
Pages (from-to)165-170
Number of pages6
JournalMedical Progress through Technology
Volume9
Issue number2-3
StatePublished - Dec 1982

Fingerprint

X Ray Computed Tomography
Computer-Assisted Image Processing
Ultrasonics
Breast
Tomography

ASJC Scopus subject areas

  • Biotechnology

Cite this

Computed transmission ultrasound tomography. / Greenleaf, James F; Gisvold, J. J.; Bahn, R. C.

In: Medical Progress through Technology, Vol. 9, No. 2-3, 12.1982, p. 165-170.

Research output: Contribution to journalArticle

Greenleaf, JF, Gisvold, JJ & Bahn, RC 1982, 'Computed transmission ultrasound tomography', Medical Progress through Technology, vol. 9, no. 2-3, pp. 165-170.
Greenleaf, James F ; Gisvold, J. J. ; Bahn, R. C. / Computed transmission ultrasound tomography. In: Medical Progress through Technology. 1982 ; Vol. 9, No. 2-3. pp. 165-170.
@article{6877e3394f0541f392f5b45e4307fc72,
title = "Computed transmission ultrasound tomography",
abstract = "Beginning with the wave equation, the authors have derived the classic reconstruction equations, which assume the ultrasonic energy travels in a straight line. The straight line reconstruction methods result in images that are not absolutely quantitative, although they may be useful in delineating speed and attenuation within two-dimensional cross sections, especially in organs such as the breast. Aberrations associated with straight-line reconstruction images are results of the effects of refraction and of diffraction. In addition, these methods assume that the acoustic wave travels within a plane and not in three dimensions; thus the assumed dimensionality of the problem also gives aberrations in the final image. The effects of diffraction are very complex and, given the current methods of measuring arrival time and amplitude, cause aberrations in the image, which result in errors both in geometry and in magnitude of the reconstructed values. Correction of diffraction effects with techniques termed 'diffraction tomography' are being investigated and have resulted in some preliminary data.",
author = "Greenleaf, {James F} and Gisvold, {J. J.} and Bahn, {R. C.}",
year = "1982",
month = "12",
language = "English (US)",
volume = "9",
pages = "165--170",
journal = "Medical Progress through Technology",
issn = "0047-6552",
publisher = "Kluwer Academic Publishers",
number = "2-3",

}

TY - JOUR

T1 - Computed transmission ultrasound tomography

AU - Greenleaf, James F

AU - Gisvold, J. J.

AU - Bahn, R. C.

PY - 1982/12

Y1 - 1982/12

N2 - Beginning with the wave equation, the authors have derived the classic reconstruction equations, which assume the ultrasonic energy travels in a straight line. The straight line reconstruction methods result in images that are not absolutely quantitative, although they may be useful in delineating speed and attenuation within two-dimensional cross sections, especially in organs such as the breast. Aberrations associated with straight-line reconstruction images are results of the effects of refraction and of diffraction. In addition, these methods assume that the acoustic wave travels within a plane and not in three dimensions; thus the assumed dimensionality of the problem also gives aberrations in the final image. The effects of diffraction are very complex and, given the current methods of measuring arrival time and amplitude, cause aberrations in the image, which result in errors both in geometry and in magnitude of the reconstructed values. Correction of diffraction effects with techniques termed 'diffraction tomography' are being investigated and have resulted in some preliminary data.

AB - Beginning with the wave equation, the authors have derived the classic reconstruction equations, which assume the ultrasonic energy travels in a straight line. The straight line reconstruction methods result in images that are not absolutely quantitative, although they may be useful in delineating speed and attenuation within two-dimensional cross sections, especially in organs such as the breast. Aberrations associated with straight-line reconstruction images are results of the effects of refraction and of diffraction. In addition, these methods assume that the acoustic wave travels within a plane and not in three dimensions; thus the assumed dimensionality of the problem also gives aberrations in the final image. The effects of diffraction are very complex and, given the current methods of measuring arrival time and amplitude, cause aberrations in the image, which result in errors both in geometry and in magnitude of the reconstructed values. Correction of diffraction effects with techniques termed 'diffraction tomography' are being investigated and have resulted in some preliminary data.

UR - http://www.scopus.com/inward/record.url?scp=0020446051&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0020446051&partnerID=8YFLogxK

M3 - Article

C2 - 7162487

AN - SCOPUS:0020446051

VL - 9

SP - 165

EP - 170

JO - Medical Progress through Technology

JF - Medical Progress through Technology

SN - 0047-6552

IS - 2-3

ER -