Development of diffusion-weighted image using a 0.3T open MRI.
J Neuroradiol
; 33(1): 57-61, 2006 Feb.
Article
em En
| MEDLINE
| ID: mdl-16528207
ABSTRACT
The purpose of this study was to develop a new technique for diffusion-weighted MRI (DWI) with a low-field scanner. DWI is becoming important for assessment of acute stroke. Until recently DWI required expensive technology. We developed multishot-DWI sequence for 0.3T open type MR imager. We prospectively studied forty patients on this 0.3T MRI and compared this DWI to single-shot-DWI by 1.5T-MRI. Group A Twenty-four patients with acute cerebral infarctions detected by 1.5T-DWI were re-examined using 0.3T-DWI within 24 hours. Sixteen patients with acute cerebral infarctions detected by 0.3T-DWI were re-examined using 1.5T-DWI within 24 hours. In 22 (92%) of 24 cases, 0.3T-DWI showed high signal. In the other two patients, motion artifact distorted 0.3T-DWI. Group B In all 16 patients, all infarctions detected by 0.3T-DWI showed high signal on 1.5T-DWI. These preliminary data show that, as long as the patient is able to keep still, multishot-DWI can be acquired successfully on a 0.3T open type MRI system.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Infarto Cerebral
/
Imagem Ecoplanar
/
Imagem de Difusão por Ressonância Magnética
Tipo de estudo:
Clinical_trials
/
Diagnostic_studies
Limite:
Aged
/
Aged80
/
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
J Neuroradiol
Ano de publicação:
2006
Tipo de documento:
Article
País de afiliação:
Japão