MRI reconstruction with motion-dependent regularization

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United States of America Patent

PATENT NO 9482732
APP PUB NO 20140126796A1
SERIAL NO

14065498

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Abstract

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A method of image reconstruction for a magnetic resonance imaging (MRI) system includes obtaining k-space scan data captured by the MRI system, the k-space scan data being representative of an undersampled region over time, iteratively reconstructing preliminary dynamic images for the undersampled region from the k-space scan data via optimization of a first instance of a minimization problem, the minimization problem including a regularization term weighted by a weighting parameter array, generating a motion determination indicative of an extent to which each location of the undersampled region exhibits motion over time based on the preliminary dynamic images, and iteratively reconstructing motion-compensated dynamic images for the region from the k-space scan data via optimization of a second instance of the minimization problem, the second instance having the weighting parameter array altered as a function of the motion determination.

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Patent Owner(s)

  • SIEMENS CORPORATION;SIEMENS HEALTHCARE GMBH

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chesneau, Nicolas Pont-Saint-Martin, FR 1 62
Janardhanan, Nirmal Plainsboro, US 9 84
Liu, Jun Cary, US 1409 33274
Nadar, Mariappan S Plainsboro, US 115 2468
Wang, Qiu Princeton, US 31 464
Yang, Zhili West Windsor, US 4 82

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