Evaluation of air photoactivation at linear accelerators for radiotherapy.
J Radiol Prot
; 35(2): 239-48, 2015 Jun.
Article
en En
| MEDLINE
| ID: mdl-25760952
ABSTRACT
High-energy x-rays produced by radiotherapy accelerators operating at potentials above 10 MV may activate the air via (γ, n) reactions with both oxygen and nitrogen. While the activation products are relatively short-lived, personnel entering the accelerator room may inhale some radioactive air, which warrants internal dosimetry assessments. This work illustrates a method based on the use of ammonium nitrate solutions for the evaluation of photon-induced air activation and for the estimate of internal doses to radiotherapy personnel. Air activation and internal dosimetry assessments based on our method are presented for some widespread radiotherapy linear accelerator models. Our results indicate that the equivalent dose to the lungs of radiotherapy personnel is negligible for beam energies below 18 MeV.
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Aceleradores de Partículas
/
Radioisótopos
/
Radioterapia
/
Exposición Profesional
/
Exposición a la Radiación
/
Pulmón
Límite:
Humans
Idioma:
En
Revista:
J Radiol Prot
Asunto de la revista:
RADIOLOGIA
Año:
2015
Tipo del documento:
Article
País de afiliación:
Italia