Study on the Dose Characteristics of the PTW-LinaCheck Dosimeter and Its Application to Daily Output Measurement.
- Author:
Dong Hyeok JEONG
1
;
Kang Kyoo LEE
;
Un Chul MOON
;
Hyun Jin KIM
;
Young Seok KIM
;
Sun Rock MOON
Author Information
1. Department of Radiation Oncology, School of Medicine, Wonkwang University Hospital, Korea. physics7@empal.com
- Publication Type:Original Article
- Keywords:
LinaCheck;
Daily output;
Setup error
- MeSH:
Dependency (Psychology);
Electrons;
Photons
- From:Korean Journal of Medical Physics
2008;19(1):56-62
- CountryRepublic of Korea
- Language:Korean
-
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.
