Measurement of temporal resolution in dual source CT.
Med Phys
; 35(2): 764-8, 2008 Feb.
Article
em En
| MEDLINE
| ID: mdl-18383698
ABSTRACT
This work assesses the temporal resolution of dual-source computed tomography (CT) in a visually intuitive manner. Exploiting the principles of ring artifact creation, a phantom containing a highly attenuating delta function signal (a wire) was rotated at the same speed as the gantry, creating a partial ring artifact where the angular extent of the artifact provides a direct indication of the temporal resolution. A demonstration of the effect of the evaluated 165 and 83 ms nominal temporal resolutions on motion artifacts in cardiac CT is provided using patient data.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Algoritmos
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Interpretação de Imagem Radiográfica Assistida por Computador
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Intensificação de Imagem Radiográfica
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Tomografia Computadorizada por Raios X
/
Artefatos
Tipo de estudo:
Diagnostic_studies
/
Evaluation_studies
Limite:
Humans
Idioma:
En
Ano de publicação:
2008
Tipo de documento:
Article