TY - JOUR
T1 - Investigation of YAG:Ce-Based Optical Fibre Sensor for Use in Ultra-Fast External Beam Radiotherapy Dosimetry
AU - Chen, Lingxia
AU - O'Keeffe, Sinead
AU - Chen, Shuilin
AU - Woulfe, Peter
AU - Gillespie, Sean
AU - Jiang, Benxue
AU - Lewis, Elfed
N1 - Publisher Copyright:
© 1983-2012 IEEE.
PY - 2019/9/15
Y1 - 2019/9/15
N2 - Radiation dosimetry plays a crucial role in the quality assurance in radiotherapy. To date, this is limited to monitoring the overall dose over the complete beam time, and so, there is limited information on the actual beam quality. An optical fibre sensor is developed based on cerium-doped yttrium aluminum garnet (YAG:Ce) scintillator. The temporal resolution and the stability of this scintillator-based optical fibre sensor have been experimentally evaluated and directly compared with similarly fabricated sensors based on terbium activated gadolinium oxysulfide and commercial plastic scintillating fibre, BCF-12. The photon yield and repeatability of the YAG-based sensor are compared in the clinical setting with the BCF-12 sensor and both show a high stability. The coefficient of variation of the YAG sensor is 0.7%, which is lower than the BCF sensor with a coefficient of variation of 1.4%.
AB - Radiation dosimetry plays a crucial role in the quality assurance in radiotherapy. To date, this is limited to monitoring the overall dose over the complete beam time, and so, there is limited information on the actual beam quality. An optical fibre sensor is developed based on cerium-doped yttrium aluminum garnet (YAG:Ce) scintillator. The temporal resolution and the stability of this scintillator-based optical fibre sensor have been experimentally evaluated and directly compared with similarly fabricated sensors based on terbium activated gadolinium oxysulfide and commercial plastic scintillating fibre, BCF-12. The photon yield and repeatability of the YAG-based sensor are compared in the clinical setting with the BCF-12 sensor and both show a high stability. The coefficient of variation of the YAG sensor is 0.7%, which is lower than the BCF sensor with a coefficient of variation of 1.4%.
KW - Ionizing radiation sensors
KW - optical fiber applications
KW - optical fiber sensors
KW - radiation dosage
KW - scintillation counters
KW - X-ray detectors
UR - http://www.scopus.com/inward/record.url?scp=85072570697&partnerID=8YFLogxK
U2 - 10.1109/JLT.2019.2919605
DO - 10.1109/JLT.2019.2919605
M3 - Article
AN - SCOPUS:85072570697
SN - 0733-8724
VL - 37
SP - 4741
EP - 4747
JO - Journal of Lightwave Technology
JF - Journal of Lightwave Technology
IS - 18
M1 - 8723602
ER -