A multi-configurational cylindrical phantom based evaluation of patient-specific IMRT QA tools

7th International Conference on 3D Radiation Dosimetry

Olding, T.^1 ; Halsall, T.^1 ; Schreiner, L.J.^1,2 ; Kerr, A.^1,2

Cancer Centre of South Eastern Ontario, Kingston General Hospital, 25 King Street West, Kingston, ON K7L5P9, Canada^1

Department of Physics, Queen's University, Kingston, ON K7L3N6, Canada^2

关键词: Cylindrical phantoms;    Dose measurement;    Electronic portal images;    IMRT delivery;    Multi-purpose;    Patient specific;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/444/1/012052/pdf
DOI  :  10.1088/1742-6596/444/1/012052

来源: IOP

【 摘 要 】

A custom in-house built multi-purpose phantom has been designed and built to investigate the integrity of the 2D Matrixx ion chamber (Scanditronix- Welhoffer, Bartlett, TN) and 3D electronic portal image device (EPID) techniques employed for patient specific IMRT delivery QA at our centre. Single ion chamber, EBT3 film and FXG gel dose measurements from the common phantom system were found to be consistent with the Matrixx and EPID measurements except in the limit of highly modulated plan deliveries.