Examination of Beam Profile Measurement Using an Imaging Plate by the Light Exposure Fading Method for Quality Assurance of External Radiation Therapy
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- Fujibuchi Toshioh
- Department of Cardiovascular Science and Medicine, Chiba University Graduate School of Medicine Department of Radiology, Chiba University Hospital
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- Funabashi Nobusada
- Department of Cardiovascular Science and Medicine, Chiba University Graduate School of Medicine
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- Hashimoto Masatoshi
- Department of Radiology, Chiba University Hospital
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- Abe Yukinao
- Department of Radiology, Chiba University Hospital
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- Iimori Takashi
- Department of Radiology, Chiba University Hospital
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- Matsubayashi Fumiyasu
- Department of Radiology, Kitasato University Hospital
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- Sawada Kohichi
- Department of Radiology, Chiba University Hospital
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- Kurokawa Masayuki
- Department of Radiology, Chiba University Hospital
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- Isobe Tomonori
- School of Allied Health Sciences, Kitasato University
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- Kikawa Takashi
- Department of Radiology, Chiba University Hospital
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- Komuro Issei
- Department of Cardiovascular Science and Medicine, Chiba University Graduate School of Medicine
Bibliographic Information
- Other Title
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- 臨床技術 Examination of Beam Profile Measurement Using an Imaging Plate by the Light Exposure Fading Method for Quality Assurance of External Radiation Therapy
- リンショウ ギジュツ Examination of Beam Profile Measurement Using an Imaging Plate by the Light Exposure Fading Method for Quality Assurance of External Radiation Therapy
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Abstract
High-resolution film dosimetry has been used for several decades to check and to measure two-dimensional dose distributions. However, in recent years, the automatic processor has been replaced by the spread of computed radiography, or has been little used hospitals. In this study, we measured the off-center ratio (OCR) of the open field, after an irradiating radiation beam was delivered to the imaging plate (IP) under conditions in which the IP was exposed to a fixed amount of light with fading, and compared these data with the OCR measured by an ionization-chamber dosimeter, which is the standard method used for measuring radiation dose. Profile measurement using IP could be achieved by performing light fading, even at a range of more than 100 MU. Further, by using a metallic filter, we succeeded in demonstrating that the profile measurement of IP in an open irradiation field could approximate the values of those obtained by an ionization chamber dosimeter. This method can serve as a simple, easy-to-use method for evaluating the QA of dose distribution in radiation therapy.
Journal
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- Japanese Journal of Radiological Technology
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Japanese Journal of Radiological Technology 62 (12), 1697-1706, 2006
Japanese Society of Radiological Technology
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Details 詳細情報について
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- CRID
- 1390001206361609728
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- NII Article ID
- 110006160170
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- NII Book ID
- AN00197784
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- COI
- 1:STN:280:DC%2BD28jltF2qsw%3D%3D
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- ISSN
- 18814883
- 03694305
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- NDL BIB ID
- 8624644
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- PubMed
- 17189937
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
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- Abstract License Flag
- Disallowed