A three-dimensional volumetric test object for geometry evaluation in magnetic resonance imaging.
Med Phys
; 24(5): 737-42, 1997 May.
Article
en En
| MEDLINE
| ID: mdl-9167165
The design of a test object for the volumetric evaluation of geometric image quality parameters in magnetic resonance imaging (MRI) is presented. Two-dimensional parameters: linearity, distortion, slice position, slice width, slice oblique angle, spatial resolution, line spread function (LSF) are measurable in all slice planes within a volume corresponding to a typical head examination. Additionally, parameters particular to three-dimensional Fourier transform (3-DFT) imaging are measurable: 3D ghosting and 3D LSF. Parameter measurements are correctable with regard to test object positioning through the determination of the six degrees of freedom of the test object within the scanner's field of view.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Imagen por Resonancia Magnética
/
Fantasmas de Imagen
Tipo de estudio:
Diagnostic_studies
/
Evaluation_studies
Límite:
Humans
Idioma:
En
Revista:
Med Phys
Año:
1997
Tipo del documento:
Article
País de afiliación:
Reino Unido
Pais de publicación:
Estados Unidos