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- Publisher
- Wiley
- Copyright
- Copyright © 1999 Wiley Subscription Services
- ISSN
- 0740-3194
- eISSN
- 1522-2594
- DOI
- 10.1002/(SICI)1522-2594(199911)42:5<963::AID-MRM17>3.0.CO;2-L
- Publisher site
- See Article on Publisher Site
Abstract
A method for motion correction, involving both data collection and reconstruction, is presented. The PROPELLER MRI method collects data in concentric rectangular strips rotated about the k‐space origin. The central region of k‐space is sampled for every strip, which (a) allows one to correct spatial inconsistencies in position, rotation, and phase between strips, (b) allows one to reject data based on a correlation measure indicating through‐plane motion, and (c) further decreases motion artifacts through an averaging effect for low spatial frequencies. Results are shown in which PROPELLER MRI is used to correct for bulk motion in head images and respiratory motion in nongated cardiac images. Magn Reson Med 42:963–969, 1999. © 1999 Wiley‐Liss, Inc.
Journal
Magnetic Resonance in Medicine – Wiley
Published: Jan 1, 1999
Keywords: ; ; ;