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Digitale Medien

Reducing motion artefacts in diffusion-weighted MRI of the brain: efficacy of navigator echo correction and pulse triggering (2000)

Dietrich, O. ; Heiland, S. ; Benner, T. ; [weitere]

Springer

Neuroradiology 42 (2000), S. 85-91

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Details

ISSN: 1432-1920

Schlagwort(e): Key words Magnetic resonance imaging, diffusion-weighted ; Artefacts Navigator echo ; Cardiac gating

Quelle: Springer Online Journal Archives 1860-2000

Thema: Medizin

Notizen: Abstract Diffusion-weighted MRI (DWI) is extremely sensitive to motion of the object being examined. Pulse triggering and navigator echo correction are methods for reducing motion artefacts which can be combined with conventional DWI sequences. Implementation of these methods in imaging sequences with a readout of one, three, or five echoes is presented and imaging results compared in a study of five healthy volunteers. As an objective measure for motion-induced image artefacts, the “artefacticity” of an image is defined. Pulse triggering and navigator echo correction significantly improve image quality and provide a technique for high-quality DWI on standard imagers without improved gradient hardware.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/s002340050020

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