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Head holder for PET, CT, and MR studies.

V Bettinardi1, R Scardaoni, M C Gilardi

  • 1Scientific Institute H. S. Raffaele, Milan, Italy.

Journal of Computer Assisted Tomography
|September 1, 1991
PubMed
Summary

A novel head holder utilizes dental molds for precise patient head fixation and repositioning in neuroimaging. This innovation enables accurate correlation of functional and anatomical brain images across multiple modalities.

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Area of Science:

  • Medical Imaging
  • Neuroscience
  • Biomedical Engineering

Background:

  • Accurate patient head fixation is crucial for reproducible neuroimaging.
  • Correlating functional and anatomical data across PET, CT, and MR modalities presents challenges.
  • Existing methods may lack precision in long-term patient repositioning.

Purpose of the Study:

  • To introduce a new head holder system for precise patient head fixation and repositioning in PET, CT, and MR scanners.
  • To enable bidimensional correlation between functional and anatomical brain images.
  • To improve accuracy and reproducibility in multi-modal neuroimaging studies.

Main Methods:

  • A head holder system was designed utilizing patient dental morphology for anatomical reference.

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  • Dental molds were created using a quick-setting dentistic material on a plastic support.
  • External markers on the head holder were used to record 3D position and angular orientation.

    • Main Results:

    • The head holder achieved fixation and repositioning accuracy within 2.5 mm in 3D space.
    • Orientation accuracy was determined to be within 1 degree.
    • The system facilitated accurate correlation of images from different neuroimaging modalities.

    Conclusions:

    • The developed head holder provides accurate and reproducible patient head fixation and repositioning for multi-modal neuroimaging.
    • Utilizing dental morphology as a reference ensures high precision for follow-up studies.
    • This device enhances the ability to correlate functional and anatomical brain data.