[Study of gradient echo (GRE) Dixon image using low-field MRI scanner for examination of metastatic bone marrow tumors: comparison of double and single echo sequences].
Nihon Hoshasen Gijutsu Gakkai Zasshi
; 58(10): 1377-82, 2002 Oct.
Article
em Ja
| MEDLINE
| ID: mdl-12540765
ABSTRACT
We evaluated the gradient echo (GRE) Dixon method in metastatic bone tumors using a low-field MRI scanner (0.2 Tesla). This method is characterized by the double echo sequence of in-phase and opposed-phase. Studies were carried out on a phantom, 14 healthy volunteers, and clinical examples (33 vertebral bodies) using the T(1)-weighted spin echo, T(2)-weighted turbo spin echo, and GRE Dixon methods. Further, we obtained addition and subtraction images from the double echo sequence. In the clinical examples, the contrast-to-noise ratio (CNR) of the subtraction images (51.3+/-24.1) was significantly better than that of the T(1)-SE images (6.7+/-3.1, p<0.0001). For the examination of metastatic bone marrow tumors using a low-field MRI scanner (0.2 Tesla), subtraction images are thought to be the most effective.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Imageamento por Ressonância Magnética
/
Aumento da Imagem
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Neoplasias da Medula Óssea
Limite:
Adult
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Aged
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Aged80
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Female
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Humans
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Male
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Middle aged
Idioma:
Ja
Revista:
Nihon Hoshasen Gijutsu Gakkai Zasshi
Ano de publicação:
2002
Tipo de documento:
Article