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Related Experiment Videos

Uniform pulsed fields for ultrasonic bioeffect experimentation.

G H Harrison1, E K Balcer-Kubiczek

  • 1Department of Radiation Oncology, University of Maryland School of Medicine, Baltimore 21201.

Ultrasonics
|May 1, 1991
PubMed
Summary
This summary is machine-generated.

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Researchers developed a method to generate high-amplitude pulsed ultrasound fields. These uniform fields are ideal for studying diagnostic ultrasound

Area of Science:

  • Biomedical Engineering
  • Acoustics
  • Ultrasound Technology

Background:

  • Diagnostic ultrasound utilizes pulsed fields.
  • Understanding bioeffects and therapeutic potential requires controlled ultrasound exposure.
  • Previous methods lacked uniform high-amplitude field generation.

Purpose of the Study:

  • To present methods for producing high-amplitude pulsed ultrasound fields.
  • To ensure uniform pressure distribution over several square centimeters.
  • To enable bioeffect and therapeutic application research.

Main Methods:

  • Utilized high power pulsers and minimally damped 3.8 cm diameter transducers.
  • Generated pulsed fields with specific parameters (e.g., 1 MPa, 1-9 pulses/burst, up to 10^4 bursts/sec, 1-3.5 MHz).

Related Experiment Videos

  • Measured waveforms and negative pressure distributions in water.

    • Main Results:

    • Achieved high-amplitude pulsed ultrasound fields.
    • Demonstrated uniform lateral pressure distributions within +/- 15% over areas up to 4 cm^2.
    • Displayed waveforms and negative pressure distributions.

    Conclusions:

    • The developed method produces uniform, high-amplitude pulsed ultrasound fields.
    • These fields are suitable for bioeffect studies on diagnostic ultrasound.
    • The fields can be applied to investigate therapeutic ultrasound applications.