scholarly journals Secondary neutron spectrum from 250-MeV passively scattered proton therapy: Measurement with an extended-range Bonner sphere system

2014 ◽  
Vol 41 (9) ◽  
pp. 092104 ◽  
Author(s):  
Rebecca M. Howell ◽  
E. A. Burgett
Keyword(s):  
Neutron Spectrum ◽  
Proton Therapy ◽  
Secondary Neutron ◽  
Scattered Proton ◽  
Bonner Sphere ◽  
Extended Range

Quantitative assessment of the production of radioactive materials by the Mevion S250i Hyperscan proton therapy system: a year-long survey

2020 ◽  
pp. 1-4
Author(s):  
Bing-Hao Chiang ◽  
Yong Chen ◽  
George MacDurmon ◽  
Salahuddin Ahmad
Keyword(s):  
Neutron Activation ◽  
Proton Therapy ◽  
Quantitative Assessment ◽  
Radiation Safety ◽  
Technical Note ◽  
Radioactive Materials ◽  
Secondary Neutron ◽  
System A

Abstract Introduction: This technical note describes a quantitative assessment of the production of radioactive materials during a year-long clinical operation of a Mevion S250i Hyperscan proton therapy system. The production of accumulated radioactive materials plays an important role in determining radiation safety in and around the proton therapy facilities. Methods: We have conducted a weekly room survey, every week for a year, during normal clinical operation. Results and conclusions: We estimated the accumulated activity from secondary neutron activation on aluminium structures at 3 m away from isocentre in the beamline to be less than 300 μCi.

Secondary neutron doses received by paediatric patients during intracranial proton therapy treatments

2014 ◽  
Vol 34 (2) ◽  
pp. 279-296 ◽  
Author(s):  
R Sayah ◽  
J Farah ◽  
L Donadille ◽  
J Hérault ◽  
S Delacroix ◽  
...  
Keyword(s):  
Proton Therapy ◽  
Secondary Neutron ◽  
Paediatric Patients

Measurements of leakage neutron spectra from a high-energy accumulation ring using Extended Range Bonner Sphere Spectrometers

2010 ◽  
Vol 45 (10) ◽  
pp. 1522-1525 ◽  
Author(s):  
A. Esposito ◽  
R. Bedogni ◽  
C. Domingo ◽  
M.J. García ◽  
K. Amgarou
Keyword(s):  
High Energy ◽  
Neutron Spectra ◽  
Energy Accumulation ◽  
Bonner Sphere ◽  
Extended Range
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