Design and optimization of a cone-beam CT system for extremity imaging / 南方医科大学学报
Journal of Southern Medical University
; (12): 1331-1337, 2018.
Article
em Zh
| WPRIM
| ID: wpr-771472
Biblioteca responsável:
WPRO
ABSTRACT
OBJECTIVE@#To establish a cone beam computed tomography (ECBCT) system for high-resolution imaging of the extremities.@*METHODS@#Based on three-dimensional X-Ray CT imaging and high-resolution flat plate detector technique, we constructed a physical model and a geometric model for ECBCT imaging, optimized the geometric calibration and image reconstruction methods, and established the scanner system. In the experiments, the pencil vase phantom, image quality (IQ) phantom and a swine feet were scanned using this imaging system to evaluate its effectiveness and stability.@*RESULTS@#On the reconstructed image of the pencil vase phantom, the edges were well preserved with geometric calibrated parameters and no aliasing artifacts were observed. The reconstructed images of the IQ phantom showed a uniform distribution of the CT number, and the noise power spectra were stable in multiple scanning under the same condition. The reconstructed images of the swine feet had clearly displayed the bones with a good resolution.@*CONCLUSIONS@#The ECBCT system can be used for highresolution imaging of the extremities to provide important imaging information to assist in the diagnosis of bone diseases.
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Texto completo:
1
Base de dados:
WPRIM
Assunto principal:
Suínos
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Algoritmos
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Processamento de Imagem Assistida por Computador
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Calibragem
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Diagnóstico por Imagem
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Intensificação de Imagem Radiográfica
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Artefatos
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Imagens de Fantasmas
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Desenho de Equipamento
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Extremidades
Tipo de estudo:
Diagnostic_studies
Limite:
Animals
Idioma:
Zh
Revista:
Journal of Southern Medical University
Ano de publicação:
2018
Tipo de documento:
Article