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A plane layered model to estimate in situ ultrasound exposures.

Publication ,  Journal Article
Smith, SW; Stewart, HF; Jenkins, DP
Published in: Ultrasonics
January 1985

Determination of in situ ultrasound exposures in experimental animals and patients is necessary to assess any potential hazard of ultrasound implied by reported biological effects in animals. A layered model was used to calculate total attenuation of ultrasound pulses as they passed through tissue layers to an organ site, thus enabling calculation of in situ intensities from free-field transducer emissions. The model assumes plane homogeneous layers of tissue of known thickness, attenuation and acoustic impedance. Calculations based on the model, compared with in situ measurements in a human cadaver specimen, were accurate to within approximately +/- 3 dB. We then calculated in situ clinical exposures using published obstetric B-scans. Total attenuation to the fetus averaged approximately 11 dB at 3.5 MHz.

Duke Scholars

Published In

Ultrasonics

DOI

EISSN

1874-9968

ISSN

0041-624X

Publication Date

January 1985

Volume

23

Issue

1

Start / End Page

31 / 40

Related Subject Headings

  • Ultrasonography
  • Risk
  • Prenatal Diagnosis
  • Pregnancy
  • Models, Biological
  • Middle Aged
  • Humans
  • Gestational Age
  • Female
  • Cadaver
 

Citation

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Smith, S. W., Stewart, H. F., & Jenkins, D. P. (1985). A plane layered model to estimate in situ ultrasound exposures. Ultrasonics, 23(1), 31–40. https://doi.org/10.1016/0041-624x(85)90008-3
Smith, S. W., H. F. Stewart, and D. P. Jenkins. “A plane layered model to estimate in situ ultrasound exposures.Ultrasonics 23, no. 1 (January 1985): 31–40. https://doi.org/10.1016/0041-624x(85)90008-3.
Smith SW, Stewart HF, Jenkins DP. A plane layered model to estimate in situ ultrasound exposures. Ultrasonics. 1985 Jan;23(1):31–40.
Smith, S. W., et al. “A plane layered model to estimate in situ ultrasound exposures.Ultrasonics, vol. 23, no. 1, Jan. 1985, pp. 31–40. Epmc, doi:10.1016/0041-624x(85)90008-3.
Smith SW, Stewart HF, Jenkins DP. A plane layered model to estimate in situ ultrasound exposures. Ultrasonics. 1985 Jan;23(1):31–40.
Journal cover image

Published In

Ultrasonics

DOI

EISSN

1874-9968

ISSN

0041-624X

Publication Date

January 1985

Volume

23

Issue

1

Start / End Page

31 / 40

Related Subject Headings

  • Ultrasonography
  • Risk
  • Prenatal Diagnosis
  • Pregnancy
  • Models, Biological
  • Middle Aged
  • Humans
  • Gestational Age
  • Female
  • Cadaver