Measurement of internal radiation dose distribution in CT examinations using polyethylene terephthalate resin

C. Yamauchi-Kawaura*, S. Yamamoto, K. Fujii, M. Komori, M. Yamauchi, N. Ohzawa, M. Kozuka, N. Suga, N. Ito, A. Fukuyama

*この研究の対応する著者

研究成果: Article査読

3 被引用数 (Scopus)

抄録

This study proposes a new dosimetry method for the estimation of the internal radiation dose distribution of a subject undergoing computed tomography (CT) examinations. In this novel method, dose distribution of a subject by CT scans was estimated based on radiophotoluminance distribution with polyethylene terephthalate (PET) resin which was cut to the average head size of a Japanese 1-year-old child. The difference in dose distribution depending on the type of bowtie filter was visualized by imaging luminance distribution with the PET phantom using a charge-coupled device camera. Dose distribution images simulated from a water phantom of the same size as the PET phantom were compared with the luminance distribution images. The linear correlation was demonstrated between luminance of the PET phantom and the simulated water dose. In comparison with the simulated water doses and the converted water doses from luminance of the PET phantom, the relative differences were within 20%.

本文言語English
ページ(範囲)303-309
ページ数7
ジャーナルRadiation Protection Dosimetry
181
4
DOI
出版ステータスPublished - 2018 11月 1
外部発表はい

ASJC Scopus subject areas

  • 放射線
  • 放射線技術および超音波技術
  • 放射線学、核医学およびイメージング
  • 公衆衛生学、環境および労働衛生

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