Double inversion recovery imaging of the brain: initial experience and comparison with fluid attenuated inversion recovery imaging.
Magn Reson Imaging
; 16(2): 127-35, 1998.
Article
en En
| MEDLINE
| ID: mdl-9508269
The purpose of this study was to evaluate the diagnostic efficacy of the double inversion recovery fast spin echo (DIR-FSE) sequence for brain imaging compared to the fluid-attenuated inversion recovery (FLAIR) sequence. DIR-FSE and FLAIR-FSE sequences were obtained and compared side by side. Image assessment criteria included lesion conspicuity, contrast between different types of normal tissue, image quality, and artifacts. In addition, contrast ratios and contrast-to-noise ratios were determined. Scan time of DIR-FSE was 33% longer than scan time of FLAIR-FSE. Overall lesion conspicuity was equal on DIR-FSE and FLAIR-FSE; however, DIR-FSE showed particular advantages for infratentorial lesions and lesions with only poor contrast on T2-weighted images, whereas FLAIR was slightly superior for small superficial cerebral abnormalities. Gray-white differentiation was better with DIR-FSE. Cerebrospinal fluid suppression was equal on both sequences; cerebrospinal fluid pulsation artifacts were more pronounced on DIR-FSE but did not cause diagnostic difficulties on these images. We conclude that DIR-FSE might be obtained if infratentorial lesions and abnormalities with only slightly prolonged T2 relaxation times are suspected. Otherwise, FLAIR-FSE seems preferable.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Procesamiento de Imagen Asistido por Computador
/
Encéfalo
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Imagen por Resonancia Magnética
Tipo de estudio:
Diagnostic_studies
Límite:
Adolescent
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Adult
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Aged
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Child
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Revista:
Magn Reson Imaging
Año:
1998
Tipo del documento:
Article
País de afiliación:
Austria
Pais de publicación:
Países Bajos