Reevaluation of T2-weighted fast field echo (T2FFE): application to rapid volumetric black-blood imaging.
Radiol Phys Technol
; 6(2): 305-12, 2013 Jul.
Article
em En
| MEDLINE
| ID: mdl-23417316
ABSTRACT
T2-fast field echo (T2FFE) sequence is a rapid T2-weighted steady state free precession sequence, but has not become a widely utilized MR-imaging strategy because of its low signal-to-noise ratio and high sensitivity to motion. These effects have seriously limited the clinical use of T2FFE and therefore T2FFE has not been used for routine clinical studies. Nevertheless, in this study, we have investigated the possibility of clinical application by re-optimization of the T2FFE on the current MRI systems. Our purpose in this study was to explore the sensitivity of T2FFE to flow spins using a flow phantom and a contrast optimization/comparison with 2D turbo spin-echo (TSE) T2-weighted images, and to evaluate its feasibility in volunteers and patients. This study demonstrated that the T2FFE sequence achieves rapid 3D T2-weighted black-blood imaging while minimizing the impact of motion using a low flip angle under the shortest repetition time and the shortest echo time conditions. Furthermore, 3D T2FFE with use of an optimal flip angle (30°-40°) can provide contrast equivalent to that of 2D TSE T2-weighted images. This proposed T2FFE sequence might be promising for numerous clinical applications.
Texto completo:
1
Coleções:
01-internacional
Temas:
Geral
/
Tipos_de_cancer
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Outros_tipos
Base de dados:
MEDLINE
Assunto principal:
Imageamento por Ressonância Magnética
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Interpretação de Imagem Assistida por Computador
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Meios de Contraste
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Imageamento Tridimensional
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Hemangioma Cavernoso
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Hepatopatias
Tipo de estudo:
Evaluation_studies
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Observational_studies
Limite:
Humans
Idioma:
En
Revista:
Radiol Phys Technol
Assunto da revista:
BIOFISICA
/
RADIOLOGIA
Ano de publicação:
2013
Tipo de documento:
Article
País de afiliação:
Japão