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Feasibility of Q-Band EPR Dosimetry in Biopsy Samples of Dental Enamel, Dentine and Bone

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Abstract

Electron paramagnetic resonance (EPR) dosimetry of tooth enamel in X-band has been established as a suitable method for individual reconstruction of doses 0.1 Gy and higher. The objective was to demonstrate the feasibility of using Q-band EPR in small biopsy tooth enamel samples to provide accurate measurements of radiation doses. Q-band spectra of small (<10 mg) irradiated samples of dentine and bone were studied to investigate the possibility of using Q-band EPR for dose measurements in those materials if there are limited amounts of enamel available, and there is no time for the chemical sample preparation required for accurate X-band measurements in dental enamel. Our results have shown that Q-band provides accurate measurements of radiation doses higher than 0.5 Gy in tooth enamel biopsy samples as small as 2 mg. Q-band EPR spectra in powdered dentine and bone demonstrated significantly higher resolution and sensitivity than in conventional X-band measurements.

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Acknowledgments

We acknowledge the help of Ms. Lynn Akwen in preparing the biopsy dental samples at the College of Dentistry, Howard University, and of Mr. Raul Garcia-Sanchez of the Department of Physics and Astronomy at Howard University in formatting the manuscript for publication.

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Authors and Affiliations

  1. Department of Physics and Astronomy, Howard University, 2355 6th St. NW, Washington, DC, 20059, USA

    Tania De, Barry Pass & Prabhakar Misra

  2. Uniformed Services University of the Health Sciences, Bethesda, MD, USA

    Alex Romanyukha

  3. Institut de Radioprotection et de Sûreté Nucléaire, Fontenay-aux-Roses, France

    Francois Trompier

  4. College of Dentistry, Howard University, Washington, DC, USA

    Barry Pass

Authors
  1. Tania De
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  2. Alex Romanyukha
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  3. Francois Trompier
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  4. Barry Pass
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  5. Prabhakar Misra
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Correspondence to Prabhakar Misra.

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De, T., Romanyukha, A., Trompier, F. et al. Feasibility of Q-Band EPR Dosimetry in Biopsy Samples of Dental Enamel, Dentine and Bone. Appl Magn Reson 44, 375–387 (2013). https://doi.org/10.1007/s00723-012-0379-9

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  • DOI: https://doi.org/10.1007/s00723-012-0379-9

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