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Journal of Nuclear Medicine Technology

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OtherImaging (JNMT)

Pilot Study: Texture analysis of PET imaging demonstrates changes in 18F-FDG uptake of the brain after prophylactic cranial irradiation.

David M. Sawyer, Travis W. Sawyer, Naghmehossadat Eshghi, Charles Hsu, Russell J. Hamilton, Linda L. Garland and Phillip H. Kuo
Journal of Nuclear Medicine Technology October 2020, jnmt.120.248393; DOI: https://doi.org/10.2967/jnmt.120.248393
David M. Sawyer
1 Department of Medical Imaging, University of Arizona, United States;
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Travis W. Sawyer
2 College of Optical Sciences, University of Arizona;
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Naghmehossadat Eshghi
1 Department of Medical Imaging, University of Arizona, United States;
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Charles Hsu
3 Department of Radiation Oncology, University of Arizona;
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Russell J. Hamilton
3 Department of Radiation Oncology, University of Arizona;
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Linda L. Garland
4 Department of Medicine, University of Arizona Cancer Center, University of Arizona;
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Phillip H. Kuo
5 Department of Medical Imaging, Department of Medicine, and Department of Biomedical Engineering, University of Arizona
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Abstract

Rationale: Prophylactic cranial irradiation (PCI) is used to decrease the probability of developing brain metastases in patients with small cell lung cancer and has been linked to deleterious cognitive effects. While no well-established imaging markers for these effects exist, previous studies have shown that structural and metabolic changes of the brain can be detected with magnetic resonance imaging and positron emission tomography (PET). This study utilized an image processing technique called texture analysis to explore whether global changes in brain glucose metabolism could be characterized in PET images. Methods: 18F-FDG PET images of the brain from patients with small cell lung cancer, obtained before and after the administration of PCI, were processed using texture analysis. Texture features were compared between the pre- and post-PCI images. Results: Multiple texture features demonstrated statistically significant differences before and after PCI, when texture analysis was applied to the brain parenchyma as a whole. Regional differences were also seen but were not statistically significant. Conclusion: Global changes in brain glucose metabolism occur after PCI and are detectable using advanced image processing techniques. These changes may reflect radiation-induced damage and thus may provide a novel method for studying radiation-induced cognitive impairment.

  • Image Processing
  • Neurology
  • PET
  • PET
  • prophylactic cranial irradiation
  • texture analysis

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Journal of Nuclear Medicine Technology: 49 (1)
Journal of Nuclear Medicine Technology
Vol. 49, Issue 1
March 1, 2021
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Pilot Study: Texture analysis of PET imaging demonstrates changes in 18F-FDG uptake of the brain after prophylactic cranial irradiation.
David M. Sawyer, Travis W. Sawyer, Naghmehossadat Eshghi, Charles Hsu, Russell J. Hamilton, Linda L. Garland, Phillip H. Kuo
Journal of Nuclear Medicine Technology Oct 2020, jnmt.120.248393; DOI: 10.2967/jnmt.120.248393

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Pilot Study: Texture analysis of PET imaging demonstrates changes in 18F-FDG uptake of the brain after prophylactic cranial irradiation.
David M. Sawyer, Travis W. Sawyer, Naghmehossadat Eshghi, Charles Hsu, Russell J. Hamilton, Linda L. Garland, Phillip H. Kuo
Journal of Nuclear Medicine Technology Oct 2020, jnmt.120.248393; DOI: 10.2967/jnmt.120.248393
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Keywords

  • Image Processing
  • Neurology
  • PET
  • prophylactic cranial irradiation
  • texture analysis
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