Development and evaluation of multi-energy PbO dosimeter for quality assurance of image-guide radiation therapy devices

In radiation therapy, accurate radiotherapy treatment plan (RTP) reproduction is necessary to optimize the clinical results. Thus, attempts have recently been made to ensure high RTP reproducibility using image-guide radiation therapy (IGRT) technology. However, the clinical use of digital X-ray equ...

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Bibliographic Details
Published in:Journal of instrumentation 2017-04, Vol.12 (4), p.C04024-C04024, Article C04024
Main Authors: Kim, Kyo-Tae, Heo, Ye-Ji, Han, Moo-Jae, Oh, Kyung-Min, Lee, Young-Kyu, Kim, Shin-Wook, Park, Sung-Kwang
Format: Article
Language:English
Subjects:
Attenuation coefficients
Digital imaging
Dosimeters
Evaluation
Image quality
Ionization chambers
Linearity
Quality assurance
Quality control
Radiation therapy
Reproducibility
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Summary:In radiation therapy, accurate radiotherapy treatment plan (RTP) reproduction is necessary to optimize the clinical results. Thus, attempts have recently been made to ensure high RTP reproducibility using image-guide radiation therapy (IGRT) technology. However, the clinical use of digital X-ray equipment requires extended quality assurance (QA) for those devices, since the IGRT device quality determines the precision of intensity-modulated radiation therapy. The study described in this paper was focused on developing a multi-energy PbO dosimeter for IGRT device QA. The Schottky-type polycrystalline PbO dosimeter with a Au/PbO/ITO structure was evaluated by comparing its response coincidence, dose linearity, measurement reproducibility, linear attenuation coefficient, and percent depth dose with those of Si diode and standard ionization chamber dosimeters.
ISSN:1748-0221
1748-0221
DOI:10.1088/1748-0221/12/04/C04024