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  Blind multirigid retrospective motion correction of MR images

Loktyushin, A., Nickisch, H., Pohmann, R., & Schölkopf, B. (2015). Blind multirigid retrospective motion correction of MR images. Magnetic Resonance in Medicine, 73(4), 1457-1468. doi:10.1002/mrm.25266.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002A-4687-C Version Permalink: http://hdl.handle.net/21.11116/0000-0001-3C20-8
Genre: Journal Article

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Loktyushin, A1, Author              
Nickisch, H, Author              
Pohmann, R2, 3, Author              
Schölkopf, B1, Author              
Affiliations:
1Dept. Empirical Inference, Max Planck Institute for Intelligent Systems, Max Planck Society, ou_1497647              
2Department High-Field Magnetic Resonance, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497796              
3Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_1497794              

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 Abstract: Purpose Physiological nonrigid motion is inevitable when imaging, e.g., abdominal viscera, and can lead to serious deterioration of the image quality. Prospective techniques for motion correction can handle only special types of nonrigid motion, as they only allow global correction. Retrospective methods developed so far need guidance from navigator sequences or external sensors. We propose a fully retrospective nonrigid motion correction scheme that only needs raw data as an input. Methods Our method is based on a forward model that describes the effects of nonrigid motion by partitioning the image into patches with locally rigid motion. Using this forward model, we construct an objective function that we can optimize with respect to both unknown motion parameters per patch and the underlying sharp image. Results We evaluate our method on both synthetic and real data in 2D and 3D. In vivo data was acquired using standard imaging sequences. The correction algorithm significantly improves the image quality. Our compute unified device architecture (CUDA)-enabled graphic processing unit implementation ensures feasible computation times. Conclusion The presented technique is the first computationally feasible retrospective method that uses the raw data of standard imaging sequences, and allows to correct for nonrigid motion without guidance from external motion sensors.

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 Dates: 2015-04
 Publication Status: Published in print
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 Identifiers: DOI: 10.1002/mrm.25266
BibTex Citekey: LoktyushinNPS2014
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Title: Magnetic Resonance in Medicine
Source Genre: Journal
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Pages: - Volume / Issue: 73 (4) Sequence Number: - Start / End Page: 1457 - 1468 Identifier: -