TY - JOUR
T1 - Patient-specific quality assurance for spot scanning proton beams using a large-volume liquid scintillator detector
AU - Robertson, D.
AU - Beddar, S.
N1 - Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
PY - 2017/6/5
Y1 - 2017/6/5
N2 - A large-volume liquid scintillator detector was used to measure individual energy layers from a clinical prostate treatment plan on a scanning proton beam system. Lateral and beam's-eye view images of the dose distribution were acquired with two CCD cameras facing adjacent sides of a scintillator tank. The measured dose images were compared with calculated dose distributions from a validated Monte Carlo model. The measured and calculated dose distributions showed good agreement, with the exception of the Bragg peak region of the lateral view, which exhibited ionization quenching. The beam's-eye and lateral views achieved gamma analysis passing rates of 99.7% and 92.5%, respectively, using gamma criteria of 3%, 3 mm. Large-volume scintillator detectors show promise for quick and accurate measurements of patient treatment fields for scanning proton beam systems.
AB - A large-volume liquid scintillator detector was used to measure individual energy layers from a clinical prostate treatment plan on a scanning proton beam system. Lateral and beam's-eye view images of the dose distribution were acquired with two CCD cameras facing adjacent sides of a scintillator tank. The measured dose images were compared with calculated dose distributions from a validated Monte Carlo model. The measured and calculated dose distributions showed good agreement, with the exception of the Bragg peak region of the lateral view, which exhibited ionization quenching. The beam's-eye and lateral views achieved gamma analysis passing rates of 99.7% and 92.5%, respectively, using gamma criteria of 3%, 3 mm. Large-volume scintillator detectors show promise for quick and accurate measurements of patient treatment fields for scanning proton beam systems.
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U2 - 10.1088/1742-6596/847/1/012005
DO - 10.1088/1742-6596/847/1/012005
M3 - Conference article
AN - SCOPUS:85021997813
SN - 1742-6588
VL - 847
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 1
M1 - 012005
T2 - 9th International Conference on 3D Radiation Dosimetry, IC3DDose 2016
Y2 - 7 November 2016 through 10 November 2016
ER -