Reference dosimetry in the presence of magnetic fields: conditions to validate Monte Carlo simulations.
Phys Med Biol
; 60(17): 6639-54, 2015 Sep 07.
Article
em En
| MEDLINE
| ID: mdl-26271015
ABSTRACT
With the advent of MRI-guided radiotherapy, reference dosimetry must be thoroughly addressed to account for the effects of the magnetic field on absorbed dose to water and on detector dose response. While Monte Carlo plays an essential role in reference dosimetry, it is also crucial for determining quality correction factors in these new conditions. The Fano cavity test is recognized as fundamental to validate Monte Carlo transport algorithms. In the presence of magnetic fields, it is necessary to define special conditions under which such a test can be performed. The present theoretical study proposes two conditions in which the validity of Fano's theorem is demonstrated in the presence of a magnetic field and the analytic expression of energy deposition is verified. It is concluded that the proposed conditions form a valid basis for two types of Fano cavity tests in the presence of a magnetic field.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Radiometria
/
Algoritmos
/
Campos Magnéticos
Tipo de estudo:
Health_economic_evaluation
Idioma:
En
Ano de publicação:
2015
Tipo de documento:
Article