Optical laser scanning of a leucodye micelle gel: preliminary results of a 3D dose verification of an IMRT treatment for a brain tumor

7th International Conference on 3D Radiation Dosimetry

Vandecasteele, J.^1 ; De Deene, Y.^1,2

Department for Radiation Oncology and Experimental Cancer Research, Ghent University, De Pintelaan 185, 9000 Gent, Belgium^1

Institute of Medical Physics, School of Physics, University of Sydney, Sydney NSW, Australia^2

关键词: Calibration procedure;    Dose deviations;    Dose distributions;    Dose verification;    Measured depths;    Optical lasers;    Pituitary adenoma;    Prospective study;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/444/1/012053/pdf
DOI  :  10.1088/1742-6596/444/1/012053

来源: IOP

【 摘 要 】

In the present study an in-house developed leucodye micelle gel was used in combination with an in-house developed optical laser scanner for the 3D dose verification of an IMRT treatment of a pituitary adenoma. In an initial prospective study, a gel measured depth dose distribution of a square 6 MV photon beam was compared with an ion chamber measurement. In a second experiment, the gel and scanner were used to verify a clinical dose distribution on a recently installed linear accelerator. The calibration procedure is identified as the major source of dose deviations.