NDLI: Improved $B_{0}$-distortion correction in diffusion MRI using interlaced q-space sampling and constrained reconstruction

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Improved $B_{0}$-distortion correction in diffusion MRI using interlaced q-space sampling and constrained reconstruction

Content Provider	Scilit
Author	Bhushan, Chitresh Joshi, Anand A. Leahy, Richard M. Haldar, Justin P.
Copyright Year	2013
Description	Journal: Magnetic Resonance in Medicine To enable high-quality correction of susceptibility-induced geometric distortion artifacts in diffusion magnetic resonance imaging (MRI) images without increasing scan time. A new method for distortion correction is proposed based on subsampling a generalized version of the state-of-the-art reversed-gradient distortion correction method. Rather than acquire each q-space sample multiple times with different distortions (as in the conventional reversed-gradient method), we sample each q-space point once with an interlaced sampling scheme that measures different distortions at different q-space locations. Distortion correction is achieved using a novel constrained reconstruction formulation that leverages the smoothness of diffusion data in q-space. The effectiveness of the proposed method is demonstrated with simulated and in vivo diffusion MRI data. The proposed method is substantially faster than the reversed-gradient method, and can also provide smaller intensity errors in the corrected images and smaller errors in derived quantitative diffusion parameters. The proposed method enables state-of-the-art distortion correction performance without increasing data acquisition time.
Related Links	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4017008/pdf
Ending Page	1232
Page Count	15
Starting Page	1218
e-ISSN	15222594
DOI	10.1002/mrm.25026
Journal	Magnetic Resonance in Medicine
Issue Number	5
Volume Number	72
Language	English
Publisher	Wiley-Blackwell
Publisher Date	2013-11-11
Access Restriction	Open
Subject Keyword	Journal: Magnetic Resonance in Medicine Radiology, Nuclear Medicine and Imaging B0-field Inhomogeneity Constrained Reconstruction Diffusion Magnetic Resonance Imaging Distortion Correction Echo-planar Imaging Interlaced Q-space Sampling
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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