The Method of MR Images Motion Artifacts Fast Suppression Based on Structure Remains

doi:10.3969/j.issn.0372-2112.2013.07.012

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ACTA ELECTRONICA SINICA ›› 2013, Vol. 41 ›› Issue (7) : 1319-1323. DOI: 10.3969/j.issn.0372-2112.2013.07.012

The Method of MR Images Motion Artifacts Fast Suppression Based on Structure Remains

HE Ning¹, LÜ Ke², WANG Yi-xue³

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Abstract

The current methods of motion artifact suppression in magnetic resonance imaging(MRI) are generally based on the K-space data.In this paper,an image post-processing method is proposed,which can directly apply to the MR images and correct the motion artifact.We designed a model based on non-local means total variational (TV) method,which consists of the non-local regularization term and patch similarity fidelity term.The regularization term can keep the image structure while correcting the motion artifact.Introduce the anisotropic diffusion structure tensor to the patch similarity fidelity term as its weight function,which can implement different diffusions process in different regions and can remain the details of the image while removing the motion artifact.The numerical scheme uses the split Bregman method.Experiments showed that the motion artifact was effectively reduced and the valuable details of images were remained and the arithmetic speed was improved.

Key words

motion artifact / MRI (magnetic resonance imaging) / structure remain / non-local means

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HE Ning, LÜ Ke, WANG Yi-xue. The Method of MR Images Motion Artifacts Fast Suppression Based on Structure Remains[J]. Acta Electronica Sinica, 2013, 41(7): 1319-1323. https://doi.org/10.3969/j.issn.0372-2112.2013.07.012

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Funding

National Natural Science Foundation of China (No.61070120, No.61271435); Natural Science Foundation of Beijing Municipality, China (No.4112021); Fundamental Project of Science and Technology Project of Beijing Municipal Education Commission (No.KM2011111417015); National Program on Key Basic Research Project (973 Program) (No.2010CB731804-1, No.2011CB706901-4); Innovation Team Construction Project and Teacher Career Development Program of Beijing Municipal Universities (No.CIT&TCD20130513)