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  Retrospective rigid motion correction of undersampled MRI data

Loktyushin, A., Babayeva, M., Gallichan, D., Krueger, G., Scheffler, K., & Kober, T. (2015). Retrospective rigid motion correction of undersampled MRI data. Poster presented at 23rd Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2015), Toronto, Canada.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002A-45F5-B Version Permalink: http://hdl.handle.net/21.11116/0000-0000-FA95-E
Genre: Poster

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 Creators:
Loktyushin, A1, 2, Author              
Babayeva, M, Author
Gallichan, D, Author
Krueger, G, Author
Scheffler, K2, Author              
Kober, T, 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              

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 Abstract: The present study combines retrospective motion correction and GRAPPA reconstruction. We propose a technique that performs several alternations of GRAPPA interpolation and motion correction steps, suppressing the artifacts caused by motion over the course of the optimization. Motion parameters are estimated directly from the data with the aid of free induction decay navigators. The proposed algorithm does not require a priori knowledge of coil sensitivity profiles and can be applied retrospectively to data acquired with generic sequences such as MP-RAGE. The algorithm was tested on motion corrupted brain images of healthy volunteers, performing controlled head movement during the scan. Results demonstrate a significant improvement in image quality.

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 Dates: 2015-06-03
 Publication Status: Published in print
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 Identifiers: BibTex Citekey: LoktyushinBGKSK2015
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Title: 23rd Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2015)
Place of Event: Toronto, Canada
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Title: 23rd Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2015)
Source Genre: Proceedings
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Pages: - Volume / Issue: - Sequence Number: 2556 Start / End Page: - Identifier: -