Accuracy and reproducibility in x-ray computed tomography polymer gel dosimetry

9th International Conference on 3D Radiation Dosimetry

Maynard, E.^1 ; Hilts, M.^2,3 ; Heath, E.^4 ; Jirasek, A.^5

Department of Physics and Astronomy, University of Victoria, Victoria

BC

V8W 2Y2, Canada^1

Department of Physics, University of British Columbia, Okanagan Campus, Kelowna

BC

V1V 1V7, Canada^2

Medical Physics, BC Cancer Agency, Centre for the Southern Interior, Kelowna

BC

V1Y 5L3, Canada^3

Carleton Laboratory for Radiotherapy Physics, Physics Department, Carleton University, Ottawa

ON

K1S 5B6, Canada^4

Department of Physics, I.K. Barber School of Arts and Sciences, University of British Columbia, Kelowna

BC

V1V 1V7, Canada^5

关键词: Calibration method;    N-isopropylacrylamides;    Polymer gel dosimetry;    Polymer gels;    Reproducibilities;    Spatial accuracy;    X-ray computed tomography;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/847/1/012047/pdf
DOI  :  10.1088/1742-6596/847/1/012047

来源: IOP

【 摘 要 】

This work assesses the overall reproducibility and accuracy of an x-ray computed tomography (CT) polymer gel dosimetry (PGD) system using a N-isopropyl-acrylamide (NIPAM) based polymer gel and investigated what effects the use of generic, inter-batch, and intra-batch gel calibration have on dosimetric and spatial accuracy. Overall excellent spatial and dosimetric accuracy was found with this system for generic, inter-batch calibration methods.