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Low-cost MR-compatible moving heart phantom.

M E Huber1, M Stuber, R M Botnar

  • 1Cardiovascular Division, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts, USA.

Journal of Cardiovascular Magnetic Resonance : Official Journal of the Society for Cardiovascular Magnetic Resonance
|September 8, 2001
PubMed
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Researchers developed a low-cost, adaptable magnetic resonance (MR) compatible motion phantom. This device models cardiac and respiratory motion, aiding in the development of advanced MR imaging techniques.

Area of Science:

  • Medical Imaging
  • Biomedical Engineering

Background:

  • Developing advanced cardiac magnetic resonance (MR) imaging requires reliable motion phantoms.
  • Existing commercial solutions are often expensive and lack flexibility for user modifications.
  • MR environments impose strict material and power source limitations for phantom construction.

Purpose of the Study:

  • To construct a low-cost, reproducible, and adaptable MR-compatible motion phantom.
  • To model both respiratory and cardiac motion for imaging sequence development.
  • To overcome limitations of commercial MR phantoms.

Main Methods:

  • Utilized a K'NEX construction set to build a phantom head capable of translation and rotation.
  • Employed a motor and rigid rod for phantom movement over 2 meters.

Related Experiment Videos

  • Integrated a fiberoptic control unit for synchronized trigger pulses to avoid MR artifacts.

    • Main Results:

    • The phantom was constructed for under $200.00, with initial design and construction taking 80 man-hours.
    • Reproduction time was reduced to approximately 15 man-hours with provided schematics.
    • The phantom successfully models periodic motion for MR imaging evaluation.

    Conclusions:

    • The developed phantom is a cost-effective and easily reproducible solution for MR imaging research.
    • Its design flexibility allows for user-specific modifications.
    • Enables detailed investigation of motion-related phenomena in MR images.