Characteristic and quality control test in sector collimator gamma knife perfexion at Siloam hospital

International Conference on Science and Applied Science (Engineering and Educational Science) 2016

物理学;工业技术;教育

Manik, Jhon Wesly^1 ; Hidayanto, Eko^1 ; Sutanto, Heri^1

Physics Department, Post Graduate Program, Diponegoro University, Jl. Prof. Soedarto, Tembalang Kota Semarang Jawa Tengah

50275, Indonesia^1

关键词: Central point;    Focal points;    Gamma knife;    Passive voices;    Patient positioning system;    Quality control tests;    Quality-control testing;    Standard tests;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/795/1/012010/pdf
DOI  :  10.1088/1742-6596/795/1/012010

来源: IOP

【 摘 要 】

In this study conducted to evaluate the collimator 4 mm, 8 mm, 16 mm to determine the level of precision Gamma Knife Perfexion there three years and eight months has not carried out measurements after the first year and verify the alignment of sector 1-8. Measurement with three axes (x-axis, y-axis, z-axis) using the film Gafcromic EBT-3, which will be signaled to a central point in the film to be measured and given a dose of 5 Gy for 10 minutes and then scanned and analyzed using ImageJ softwere 1.50 and dose rate in film comparison with measurent dose rate using electrometer. Alignment of Patient-Positioning System (PPS) with Radiation Focal Point (RFP) determination of quality control testing each collimator 4 mm in the standard test with0.4 mm passive voice AAPM 54. The results of the standard are still in conformity item 0.21 mm for 4 mm and corelasi dose rate film and measurent using electrometer collimator 4 mm = 0.965, 8 mm = 0.964, 16 mm = 0.959.