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Research ArticleTeaching Case Studies

An Unusual Cause of γ-Camera Contamination

David L. Francia, Kathy P. Willowson and Dale L. Bailey
Journal of Nuclear Medicine Technology December 2022, 50 (4) 381-383; DOI: https://doi.org/10.2967/jnmt.122.264172
David L. Francia
1Department of Nuclear Medicine, Royal North Shore Hospital, Sydney, New South Wales, Australia;
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Kathy P. Willowson
1Department of Nuclear Medicine, Royal North Shore Hospital, Sydney, New South Wales, Australia;
2Institute of Medical Physics, University of Sydney, Sydney, New South Wales, Australia; and
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Dale L. Bailey
1Department of Nuclear Medicine, Royal North Shore Hospital, Sydney, New South Wales, Australia;
3Faculty of Medicine and Health, University of Sydney, Sydney, New South Wales, Australia
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Figures

  • FIGURE 1.
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    FIGURE 1.

    Whole-body planar post–recombinant thyroid-stimulating hormone 131I (80 MBq) scan demonstrating contamination (solid arrow) on anterior projection (detector 1). Effect of fixed site of contamination in whole-body scan where body moves continuously under detector’s z-direction is to introduce streak down image in line with site of contamination (open arrow).

  • FIGURE 2.
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    FIGURE 2.

    Images on both detectors without any source of radioactivity present and collimators in place, demonstrating contamination on detector 1. Images are shown in both summed triple-window pulse-height analyzer settings for 67Ga (top row) and single window for 131I (bottom row).

  • FIGURE 3.
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    FIGURE 3.

    Hair that was found to be source of contamination.

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Journal of Nuclear Medicine Technology: 50 (4)
Journal of Nuclear Medicine Technology
Vol. 50, Issue 4
December 1, 2022
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An Unusual Cause of γ-Camera Contamination
David L. Francia, Kathy P. Willowson, Dale L. Bailey
Journal of Nuclear Medicine Technology Dec 2022, 50 (4) 381-383; DOI: 10.2967/jnmt.122.264172

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An Unusual Cause of γ-Camera Contamination
David L. Francia, Kathy P. Willowson, Dale L. Bailey
Journal of Nuclear Medicine Technology Dec 2022, 50 (4) 381-383; DOI: 10.2967/jnmt.122.264172
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Keywords

  • instrumentation
  • quality assurance
  • Radiation Physics
  • contamination
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