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Why should standard eddy-current distortion correction techniques be avoided even for moderately high b-value data?

Graham, M; Drobnjak, I; Zhang, H; (2015) Why should standard eddy-current distortion correction techniques be avoided even for moderately high b-value data? In: (Proceedings) ISMRM. ISMRM (International Society for Magnetic Resonance in Medicine) Green open access

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Abstract

This work highlights issues with the current practice for correcting eddy-current distortions on moderately high b-value data and demonstrates their mitigation with a simple alternative. Both techniques are evaluated on real and simulated data, and the importance of EC correction for estimating microstructure is illustrated with the NODDI model. We demonstrate that correcting moderately high b-value data with standard EC correction techniques introduces distortion that compromises the anatomical correspondence between the DWIs and leads to questionable estimates of microstructural features. We show our alternative circumvents these issues and provides good correction.

Type: Proceedings paper
Title: Why should standard eddy-current distortion correction techniques be avoided even for moderately high b-value data?
Event: ISMRM
Location: Toronto
Dates: 01 June 2015 - 05 June 2015
Open access status: An open access version is available from UCL Discovery
Publisher version: https://www.ismrm.org/15/15program.htm
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Diffusion MRI, Eddy Currents
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Computer Science
URI: https://discovery.ucl.ac.uk/id/eprint/1469421
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