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Related Experiment Videos

Liquid or solid ultrasonically tissue-mimicking materials with very low scatter

E L Madsen1, G R Frank, F Dong

  • 1Department of Medical Physics, University of Madison, Wisconsin 53706, USA.

Ultrasound in Medicine & Biology
|July 4, 1998
PubMed
Summary

A novel ultrasound tissue phantom uses evaporated milk for low backscatter and stable properties. This material accurately mimics diagnostic ultrasound characteristics, enabling precise lesion visualization and contrast prediction.

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Area of Science:

  • Biomedical Engineering
  • Materials Science
  • Medical Imaging

Background:

  • Developing accurate tissue-mimicking materials is crucial for ultrasound phantom development.
  • Existing materials may lack specific acoustic properties or stability.
  • Evaporated milk offers a unique base for creating tunable ultrasound phantoms.

Purpose of the Study:

  • To describe a new tissue-mimicking material for ultrasound applications.
  • To characterize its acoustic properties, including propagation speed and attenuation.
  • To evaluate its utility in solid and liquid phantom forms for diagnostic ultrasound.

Main Methods:

  • Utilized evaporated milk as the primary absorption component.
  • Formulated material in both solid and liquid states.

Related Experiment Videos

  • Measured propagation speed, attenuation coefficient, and backscatter.
  • Investigated lesion simulation and contrast prediction capabilities.

    • Main Results:

    • Achieved a propagation speed of 1540 m/s and frequency-proportional attenuation.
    • Material exhibits low backscatter, tunable by adding scatterers.
    • Attenuation coefficient slopes range from 0.1-0.7 dB cm-1 MHz-1.
    • Material contrast is predictable and frequency-independent with uniform scatterers.
    • Demonstrated stability over 2.5 years with thimerosal preservation.

    Conclusions:

    • The evaporated milk-based material is a versatile and stable ultrasound phantom component.
    • Its tunable acoustic properties and low intrinsic backscatter facilitate accurate lesion simulation.
    • The material supports precise beam pattern determination and contrast analysis in diagnostic ultrasound.