Comprehensive reconstruction of multi-shot multi-channel diffusion data using mussels

Merry Mani; Vincent Magnotta; Douglas Kelley; Mathews Jacob

doi:10.1109/EMBC.2016.7590897

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Conference proceeding

Comprehensive reconstruction of multi-shot multi-channel diffusion data using mussels

Merry Mani, Vincent Magnotta, Douglas Kelley and Mathews Jacob

2016 38th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), Vol.2016-, pp.1107-1110

08/2016

DOI: 10.1109/EMBC.2016.7590897

PMID: 28268519

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https://www.ncbi.nlm.nih.gov/pmc/articles/7902245View

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Abstract

Echo planar imaging (EPI)-based magnetic resonance imaging (MRI) data are often corrupted by Nyquist ghost artifacts resulting from odd-even shifts of the EPI read-outs. Algorithms that corrects for the Nyquist ghost artifacts rely on calibration scans that are collected prior to the data acquisition. However, a more complex pattern of ghosting artifacts arises when diffusion-weighted data are acquired using segmented k-space EPI read-outs. The additional under-sampling present in the segmented acquisitions and the inter-shot motion during diffusion weighted acquistion cause ghosting artifacts in addition to the EPI ghosting arising from odd-even shifts. We propose a comprehensive method that can remove the Nyquist-ghosting artifacts as well as the inter-shot motion-induced ghosting artifacts in diffusion weighted images in a single step from partial Fourier data without the need for a calibration scan. We show very high quality diffusion data recovery using the proposed method.

Magnetic resonance imaging

Motion segmentation

matrix completion

MRI

low-rank

Nonhomogeneous media

multi-shot diffusion

Calibration

Mathematical model

Image reconstruction

annihilating filter

Details

Title: Subtitle: Comprehensive reconstruction of multi-shot multi-channel diffusion data using mussels
Creators: Merry Mani - Univ. of Iowa, Iowa City, IA, USA
Vincent Magnotta - Univ. of Iowa, Iowa City, IA, USA
Douglas Kelley - GE Healthcare, Waukesha, WI, USA
Mathews Jacob - Univ. of Iowa, Iowa City, IA, USA
Resource Type: Conference proceeding
Publication Details: 2016 38th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), Vol.2016-, pp.1107-1110
DOI: 10.1109/EMBC.2016.7590897
PMID: 28268519
NLM abbreviation: Conf Proc IEEE Eng Med Biol Soc
ISSN: 1557-170X
eISSN: 2694-0604
Publisher: IEEE
Language: English
Date published: 08/2016
Academic Unit: Roy J. Carver Department of Biomedical Engineering; Radiology; Electrical and Computer Engineering; Psychiatry; Iowa Neuroscience Institute; Radiation Oncology
Record Identifier: 9984051892002771

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