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  4. 3D Residual Eddy Current Field Characterisation: applied to Diffusion Weighted Magnetic Resonance Imaging
 
research article

3D Residual Eddy Current Field Characterisation: applied to Diffusion Weighted Magnetic Resonance Imaging

O'Brien, Kieran  
•
Daducci, Alessandro  
•
Kickler, N.
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2013
IEEE Transactions on Medical Imaging (T-MI)

Clinical use of the Stejskal-Tanner diffusion weighted images is hampered by the geometric distortions that result from the large residual 3D eddy current field induced. In this work we aimed to predict, using linear response theory, the residual 3D eddy current field required for geometric distortion correction based on phantom eddy current field measurements. The predicted 3D eddy current field induced by the diffusion-weighting gradients was able to reduce the root mean square error of the residual eddy current field to ~1Hz. The model’s performance was tested on diffusion weighted images of 4 normal volunteers, following distortion correction, the image quality of the Stejskal-Tanner diffusion-weighted images was found to have comparable image quality to image registration based corrections (FSL) at low b-values. Unlike registration techniques the correction was not hindered by low SNR at high b-values, and results in improved image quality relative to FSL. Characterization of the 3D eddy current field with linear response theory enables the prediction of the 3D eddy current field required to correct eddy current induced geometric distortions for a wide range of clinical and high b-value protocols.

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Type
research article
DOI
10.1109/TMI.2013.2259249
Web of Science ID

WOS:000322654500013

Author(s)
O'Brien, Kieran  
Daducci, Alessandro  
Kickler, N.
Lazeyras, Francois
Gruetter, Rolf  
Feiweier, T.
Krüger, Gunnar  
Date Issued

2013

Publisher

Institute of Electrical and Electronics Engineers

Published in
IEEE Transactions on Medical Imaging (T-MI)
Volume

32

Issue

8

Start page

1515

End page

1525

Subjects

LTS5

•

CIBM-AIT

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LTS5  
LIFMET  
CIBM  
Available on Infoscience
April 24, 2013
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/91749
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