Sensitivity of linear CCD array based film scanners used for film dosimetry.
Med Phys
; 33(11): 3993-6, 2006 Nov.
Article
em En
| MEDLINE
| ID: mdl-17153378
ABSTRACT
Film dosimetry is commonly performed by using linear CCD array transmission optical densitometers. However, these devices suffer from a variation in response along the detector array. If not properly corrected for, this nonuniformity may lead to significant overestimations of the measured dose as one approaches regions close to the edges of the scanning region. In this note, we present measurements of the spatial response of an AGFA Arcus II document scanner used for radiochromic film dosimetry. Results and methods presented in this work can be generalized to other CCD based transmission scanners used for film dosimetry employing either radiochromic or radiographic films.
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01-internacional
Base de dados:
MEDLINE
Assunto principal:
Processamento de Sinais Assistido por Computador
/
Periféricos de Computador
/
Dosimetria Fotográfica
Tipo de estudo:
Diagnostic_studies
/
Evaluation_studies
Idioma:
En
Revista:
Med Phys
Ano de publicação:
2006
Tipo de documento:
Article