Basic study on evaluation of X-ray dose distribution using plastic scintillator plate and digital CMOS camera

H. Yoshitani, T. Fujibuchi, C. Anam

Research output: Contribution to journalConference articlepeer-review

Abstract

Evaluation of dose distribution in a phantom is effective for quality control of radiation diagnostic equipment and evaluation of exposure. However, measurements at multiple points using a dosimeter is complicated. An alternative is to combine a plastic scintillator (PS) plate and digital camera to obtain the dose distribution of the entire phantom. In this study, the basic characteristics of this system were examined. A PS was sandwiched between Polymethyl Methacrylate (PMMA) disk phantoms, and irradiation was performed while the tube current was changed from one direction. The tube voltage was set to two values, specifically 60 and 120 kV. During irradiation, the entire phantom was recorded at 0.1 s intervals using a digital Complementary Metal Oxide Semiconductor (CMOS) camera. The lowest dose rate where luminescence could be detected was approximately 1 mGy per 0.1 s. The amount of luminescence increased linearly with the dose rate. The proportional relationship that was confirmed between dose rate and luminescence suggests the possibility of using the system for dose estimation. This proposed dose-evaluation method can enable the dose distribution to be evaluated with a time resolution of 0.1 s and a high spatial resolution.

Original languageEnglish
Article number012058
JournalJournal of Physics: Conference Series
Volume1943
Issue number1
DOIs
Publication statusPublished - Jul 14 2021
Event10th International Seminar on New Paradigm and Innovation of Natural Sciences and itsApplication, ISNPINSA 2020 - Virtual, Online, Indonesia
Duration: Sep 24 2020Sep 25 2020

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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