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Original Article

Korean Journal of Medical Physics 2008; 19(1): 56-62

Published online March 25, 2008

Copyright © Korean Society of Medical Physics.

Study on the Dose Characteristics of the PTW-LinaCheck Dosimeter and Its Application to Daily Output Measurement

PTW-LinaCheck 측정기의 선량 특성과 일일 출력측정 응용에 관한 연구

Dong Hyeok Jeong*, Kang Kyoo Lee*, Un Chul Moon*, Hyun Jin Kim*, Young Seok Kim*, Sun Rock Moon*

정동혁*ㆍ이강규*ㆍ문언철*ㆍ김현진*ㆍ김영석*ㆍ문성록*

*Department of Radiation Oncology, School of Medicine, Wonkwang University Hospital, Institute of Wonkwang Medical Science, Iksan, Korea

*원광대학교병원 방사선종양학과, 원광의과학연구소

Abstract

In this study, we have investigated the dose characteristics of PTW-LinaCheck designed to detect output of medical LINAC and discussed clinical use of the detector. The reproducibility, linearity, and dose rate dependency of the dosimeter were measured for photons of 6 and 15 MV and the electrons of 4, 6, 9, 12, and 16 MeV. To know the error ranges of the measured data in daily output measurement, the response variations due to geometrical setup errors were measured. As a result of measurement, the error range from the geometrical setup and the reproducibility was less than ±0.6% for given beam qualities in daily output measurement, where the errors from the linearity and the dose rate dependency were negligible. Finally, we concluded that the LinaCheck dosimeter has a good characteristics in terms of dose and setup convenience in daily output measurement. In addition we have shown an examples of clinical use of this dosimeter for measuring daily output more than 60 days.

KeywordsLinaCheck, Daily output, Setup error

Korean Society of Medical Physics

Vol.35 No.2
June 2024

pISSN 2508-4445
eISSN 2508-4453
Formerly ISSN 1226-5829

Frequency: Quarterly

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