Dose-response measurement in gel dosimeter using various imaging modalities

T. Fujibuchi, H. Kawamura, K. Yamanashi, A. Hiroki, S. Yamashita, M. Taguchi, Y. Sato, K. Mimura, H. Ushiba, T. Okihara

Research output: Contribution to journalConference articlepeer-review

3 Citations (Scopus)

Abstract

Measurement methods that accurately measure radiation dose distribution in a three dimensional manner in order to allow comparisons of treatment plans are needed for quality assurance. One such measurement method involves the use of a polymer gel dosimeter to measure the dose distribution in three dimensions. During irradiation, a polymerization reaction makes new chemical bonds and induces changes of the chemical structure of the gel of the gel dosimeter. In the present study, dose-response measurement of an environment-friendly material used in the gel dosimeter was performed by imaging with computed tomography (CT) and R1, R2, and fluid-attenuated inversion-recovery (FLAIR) magnetic resonance imaging (MRI) under various imaging conditions. Dose-response characteristics in the gel dosimeter used in the experiment were observed at doses of 5-20 Gy administered by X-ray CT and MRI. Although the FLAIR signal was a relative value, the dose-response values with FLAIR were excellent compared to those with R1, R2, and CT. Determination of more appropriate imaging conditions could help expand the dose-response parameters of each measurement method.

Original languageEnglish
Article number012089
JournalJournal of Physics: Conference Series
Volume444
Issue number1
DOIs
Publication statusPublished - 2013
Event7th International Conference on 3D Radiation Dosimetry, IC3DDose 2012 - Sydney, NSW, Australia
Duration: Dec 4 2012Dec 8 2012

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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