ISSN:
1432-1920
Keywords:
Key words Magnetic resonance imaging, diffusion-weighted
;
Artefacts Navigator echo
;
Cardiac gating
Source:
Springer Online Journal Archives 1860-2000
Topics:
Medicine
Notes:
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.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s002340050020
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