SU-GG-T-421: Study of Response of Plastic Scintillation Detectors in Small Field 6 MV Photon Beams

2010 ◽  
Vol 37 (6Part22) ◽  
pp. 3283-3283
Author(s):  
L Wang ◽  
S Beddar
Keyword(s):  
Scintillation Detectors ◽  
Small Field ◽  
Photon Beams ◽  
Plastic Scintillation

SU-GG-T-327: Measurement of Small Field Output Factors Using Plastic Scintillation Detectors

2010 ◽  
Vol 37 (6Part20) ◽  
pp. 3261-3261
Author(s):  
D Klein ◽  
R Tailor ◽  
L Archambault ◽  
L Wang ◽  
F Therriault-Proulx ◽  
...  
Keyword(s):  
Scintillation Detectors ◽  
Small Field ◽  
Plastic Scintillation ◽  
Output Factors

A new water-equivalent 2D plastic scintillation detectors array for the dosimetry of megavoltage energy photon beams in radiation therapy

2011 ◽  
Vol 38 (12) ◽  
pp. 6763-6774 ◽  
Author(s):  
Mathieu Guillot ◽  
Luc Beaulieu ◽  
Louis Archambault ◽  
Sam Beddar ◽  
Luc Gingras
Keyword(s):  
Radiation Therapy ◽  
Scintillation Detectors ◽  
Photon Beams ◽  
Energy Photon ◽  
Plastic Scintillation

A comparative study of small field total scatter factors and dose profiles using plastic scintillation detectors and other stereotactic dosimeters: The case of the CyberKnife

2013 ◽  
Vol 40 (1) ◽  
pp. 011719 ◽  
Author(s):  
Jonathan Morin ◽  
Dominic Béliveau-Nadeau ◽  
Eunah Chung ◽  
Jan Seuntjens ◽  
Dany Thériault ◽  
...  
Keyword(s):  
Comparative Study ◽  
Scintillation Detectors ◽  
Small Field ◽  
Plastic Scintillation

Monte Carlo study on mucosal dose in oral and naval cavity using photon beams with small field

2011 ◽  
Vol 10 (4) ◽  
pp. 261-271 ◽  
Author(s):  
James C.L. Chow ◽  
Amir M. Owrangi
Keyword(s):  
Monte Carlo ◽  
Beam Energy ◽  
Field Size ◽  
Small Field ◽  
Beam Angle ◽  
Photon Beams ◽  
Dose Ratio ◽  
Dose Enhancement ◽  
Bone Interface ◽  
Energy Beam

AbstractWe study how mucosal dose in the oral or nasal cavity depends on the irradiated small segmental photon fields varying with beam energy, beam angle and mucosa thickness. Dose ratio (mucosal dose with bone underneath to dose at the same point without bone) reflecting the dose enhancement due to the bone backscatter was determined by Monte Carlo simulation (EGSnrc-based code), validated by measurements. Phase space files based on the 6 and 18 MV photon beams with small field size of 1 × 1 cm2, produced by a Varian 21 EX linear accelerator, were generated using the BEAMnrc Monte Carlo code. Mucosa phantoms (mucosa thickness = 1, 2 and 3 mm) with and without a bone under the mucosa were irradiated by photon beams with gantry angles varying from 0 to 30°. Doses along the central beam axis in the mucosa and the dose ratio were calculated with different mucosa thicknesses. For the 6 MV photon beams, the dose at the mucosa-bone interface increased by 44.9–41.7%, when the mucosa thickness increased from 1 to 3 mm for the beam angle ranging from 0 to 30°. These values were lower than those (58.8–53.6%) for the 18 MV photon beams with the same beam angle range. For both the 6 and 18 MV photon beams, depth doses in the mucosa were found to increase with an increase of the beam angle. Moreover, the dose gradient in the mucosa was greater for the 18 MV photon beams compared to the 6 MV. For the dose ratio, it was found that the dose enhancement due to the bone backscatter increased with a decrease of mucosa thickness, and was more significant at both the air-mucosa and mucosa-bone interface. Mucosal dose with bone was investigated by Monte Carlo simulations with different experimental configurations, and was found vary with the beam energy, beam angle and mucosa thickness for a small segmental photon field. The dosimetric information in this study should be considered when searching for an optimized treatment strategy to minimize the mucosal complications in the head-and-neck intensity-modulated radiation therapy.

A mathematical formalism for hyperspectral, multipoint plastic scintillation detectors

2012 ◽  
Vol 57 (21) ◽  
pp. 7133-7145 ◽  
Author(s):  
Louis Archambault ◽  
François Therriault-Proulx ◽  
Sam Beddar ◽  
Luc Beaulieu
Keyword(s):  
Mathematical Formalism ◽  
Scintillation Detectors ◽  
Plastic Scintillation

Small field dose measurements using plastic scintillation detector in heterogeneous media

2017 ◽  
Vol 44 (7) ◽  
pp. 3815-3820 ◽  
Author(s):  
Jinyu Xue ◽  
Jesse D. McKay ◽  
Jimm Grimm ◽  
Chee-Wai Cheng ◽  
Ronald Berg ◽  
...  
Keyword(s):  
Scintillation Detector ◽  
Heterogeneous Media ◽  
Small Field ◽  
Plastic Scintillation ◽  
Plastic Scintillation Detector ◽  
Dose Measurements
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