A feasibility study on the use of digital tomosynthesis with individually-acquired megavoltage portal images for target localization.
J BUON
; 14(1): 103-8, 2009.
Article
em En
| MEDLINE
| ID: mdl-19365878
ABSTRACT
PURPOSE:
To determine the feasibility of using megavoltage (MV) images and digital tomosynthesis to determine the three dimensional (3D) localization of different objects. MATERIALS ANDMETHODS:
Different phantom geometries were imaged using an electronic portal imaging device and digital tomosynthesis was used to reconstruct tomograms. These were compared with corresponding computed tomography (CT) images.RESULTS:
While in-plane resolution of the tomograms was comparable as that of the CT images, definite out-of-plane (depth) localization was restricted to 5 mm.CONCLUSION:
The results confirm that it is possible to perform 3D localization of objects by using digital tomosynthesis for volumetric reconstructions from individually-acquired MV-quality portal images.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Radioterapia Assistida por Computador
/
Interpretação de Imagem Radiográfica Assistida por Computador
/
Radioterapia de Alta Energia
/
Imagens de Fantasmas
/
Imageamento Tridimensional
/
Radioterapia de Intensidade Modulada
Idioma:
En
Ano de publicação:
2009
Tipo de documento:
Article