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Related Experiment Videos

Shock-wave measurement using a calibrated interferometric fiber-tip sensor

C Koch1, W Molkenstruck, R Reibold

  • 1Laboratory 1.43, Physikalisch-Technische Bundesanstalt, Braunschweig, Germany. christian.koch@ptb.de

Ultrasound in Medicine & Biology
|January 1, 1997
PubMed
Summary

This study presents shock-wave measurements corrected using a fiber-tip sensor and a transfer function. The method accurately characterized an electromagnetic lithotriptor

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Area of Science:

  • Biomedical Engineering
  • Acoustics
  • Optical Metrology

Background:

  • Shock-wave lithotripsy requires precise characterization of acoustic fields.
  • Accurate measurement of shock waves is crucial for patient safety and treatment efficacy.
  • Fiber-optic sensors offer potential for in-situ shock-wave measurement.

Purpose of the Study:

  • To present shock-wave measurements using a calibrated fiber-tip sensor.
  • To develop and apply a method for correcting measured shock-wave data.
  • To characterize the acoustic output of an electromagnetic lithotriptor.

Main Methods:

  • Utilized a calibrated fiber-tip sensor based on a Michelson interferometer.
  • Employed an independently obtained transfer function to correct data in the Fourier frequency domain.

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  • Determined the transfer function's phase from its amplitude using minimum-phase fitting.

    • Main Results:

    • Successfully corrected shock-wave measurement data using the developed transfer function.
    • Reliably characterized the shock-wave source of an electromagnetic lithotriptor.
    • Demonstrated the sensor system's capability for acoustic field investigation.

    Conclusions:

    • The validated method enables accurate shock-wave measurement and correction.
    • Characterization of lithotriptor acoustic fields aids in estimating patient exposure.
    • Optimization of lithotriptor systems for improved treatment outcomes is facilitated.