Study of soft tissues viscoelastic properties using acoustic palpation method

Authors

  • S. A. Girnyk V.N. Karazin Kharkov National University Author
  • Eu. А. Barannik V.N. Karazin Kharkiv National University Author
  • V. V. Tovstiak V.N. Karazin Kharkiv National University Author
  • D. A. Tolstoluzhskiy V.N. Karazin Kharkov National University Author
  • V. V. Podzolkova V.N. Karazin Kharkov National University Author

Keywords:

ultrasound, radiation force, soft tissue, shear strain, relaxation, shear modulus

Abstract

The study of soft tissue shear elasticity modulus using the remotely induced shear waves is presented. Shear wave generation was carried out using transient acoustic radiation force with ultrasound intensity in the focal point equal to 145 W/cm2. The transient acoustic radiation force duration was equal to 2,18 ms. Measurements of the shear waves propagation velocity were made in the transducer focal plane by means of Doppler method using shear excitation propagation time. The following cow tissues were taken as the objects of study: liver, brain, udder, muscle tissues, spleen. The values of shear wave propagation velocity in tissues were obtained. The values of shear elasticity modulus were calculated using the known correlation between shear elasticity modulus, tissue density, and velocity. It was shown that the studied soft tissues differ in shear modulus value and, moreover, muscle tissues have high anisotropy of properties directed lengthwise and across the muscle fibers. The tissue elasticity and viscosity modulus were evaluated on basis of the sheer excitation relaxation analysis.

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Author Biographies

  • S. A. Girnyk, V.N. Karazin Kharkov National University

    31 Kurchatov Str., Kharkiv, 61108, Ukrain

  • Eu. А. Barannik, V.N. Karazin Kharkiv National University

    31 Kurchatov Str., Kharkiv, 61108, Ukrain

  • V. V. Tovstiak, V.N. Karazin Kharkiv National University

    31 Kurchatov Str., Kharkiv, 61108, Ukrain

  • D. A. Tolstoluzhskiy, V.N. Karazin Kharkov National University

    31 Kurchatov Str., Kharkiv, 61108, Ukrain

  • V. V. Podzolkova, V.N. Karazin Kharkov National University

    31 Kurchatov Str., Kharkiv, 61108, Ukrain

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Published

2007-06-05

Issue

Vol. 2 No. 19 (2007): Біофізичний вісник

Section

Medical physics

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How to Cite

Study of soft tissues viscoelastic properties using acoustic palpation method. (2007). Biophysical Bulletin, 2(19), 98-104. https://periodicals.karazin.ua/biophysvisnyk/article/view/17247

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