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A versatile, low-cost method for presenting visual stimuli during MRI.

J W Roby1, J H Gao, P T Fox

  • 1Research Imaging Center, University of Texas Health Science Center at San Antonio 78284-6240, USA. roby@uthscsa.edu

Journal of Magnetic Resonance Imaging : JMRI
|March 14, 2000
PubMed
Summary

A new, affordable visual system for brain imaging studies offers high image quality and adaptability for laboratory and clinical use. This system is suitable for functional magnetic resonance imaging and positron emission tomography activation studies.

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Area of Science:

  • Neuroimaging
  • Medical Imaging Technology
  • Biomedical Engineering

Background:

  • Functional magnetic resonance imaging (fMRI) and positron emission tomography (PET) studies require reliable visual presentation systems.
  • Existing systems may be expensive, difficult to implement, or lack adaptability to diverse research and clinical environments.

Purpose of the Study:

  • To describe an inexpensive, easily implemented, and adaptable visual presentation system.
  • To evaluate the performance characteristics of this novel system for neuroimaging applications.

Main Methods:

  • Development of a novel visual presentation system.
  • Performance evaluation including field of view measurement, radiofrequency interference testing, and image quality assessment.

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Main Results:

  • The system demonstrated a field of view of 26 x 56 degrees.
  • No radiofrequency interference was detected.
  • High image quality was achieved.

Conclusions:

  • The developed visual presentation system is cost-effective, user-friendly, and versatile for various laboratory and clinical settings.
  • It is suitable for brain activation studies using fMRI and PET, as well as for presenting relaxation videos during clinical MRI procedures.