ABDOMEN-PELVIS COMPUTED TOMOGRAPHY PROTOCOL OPTIMIZATION: AN IMAGE QUALITY AND DOSE ASSESSMENT.
Radiat Prot Dosimetry
; 184(1): 66-72, 2019 Jul 01.
Article
em En
| MEDLINE
| ID: mdl-30371858
ABSTRACT
Computed tomography (CT) has a high level of sensitivity and specificity for the diagnosis and follow-up of pathologies of the abdomen-pelvis region. Some features, such as automatic tube current modulation (ATCM), permits the acquisition of quality images with low radiation doses. This study evaluated the image quality and radiation dose of abdomen-pelvis CT protocols with ATCM technique. Were performed five CT protocols using 16-slice and 64-slice scanners, an anthropomorphic phantom for dosimetric measurements, an analytical phantom and retrospective examinations for image quality analysis. Were found significant reduction in effective dose. The highest absorbed doses were found in the stomach and spleen (56.1 and 47.2 mGy, respectively). Objective parameters as noise, low contrast and spatial resolution did not significantly differ between the protocols (p > 0.05). All protocols received the range of 'Optimum/Acceptable' in patient's image quality analysis. This methodology can be reproduced in any clinical routine to optimize CT protocols.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Pelve
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Processamento de Imagem Assistida por Computador
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Radiografia Abdominal
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Tomografia Computadorizada por Raios X
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Imagens de Fantasmas
Tipo de estudo:
Guideline
/
Observational_studies
Limite:
Adult
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Humans
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Male
Idioma:
En
Ano de publicação:
2019
Tipo de documento:
Article