Determination of Output Factors for the Gamma Knife using a Radiophotoluminescent Glass Rod Detector.
- Author:
Jeong Eun RAH
1
;
Won Seop SUH
;
Dong Oh SHIN
;
Hee Sun KIM
;
Tea Suk SUH
Author Information
1. Department of Biomedical Engineering, College of Medicine, The Catholic University of Korea. suhsanta@catholic.ac.kr
- Publication Type:Original Article
- Keywords:
Radiophotoluminescent glass rod detector;
Output factor;
x-axis dose profile;
FWHM
- MeSH:
Glass*;
Radiotherapy
- From:Korean Journal of Medical Physics
2007;18(1):13-19
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
The purpose of study is to investigate whether glass rod detector (GRD) would be suitable for dosimeter of radiotherapy units. A GRD is used for the measurement of the output factors and x-axis beam profiles from Gamma Knife. The output factors measured with GRD from the 14, 8 and 4 mm collimators relative to the 18 mm collimator are 0.980+/-0.013, 0.949+/-0.013 and 0.872+/-0.012, respectively. The output factors obtained with a GRD are within 1.0% in good agreement with the values recommended by the manufacture. The full width at half maximum (FWHM) of x-axis beam profiles measured with GRD are 5.9 mm at a 4 mm collimator.
