Geometric evaluation of distortion correction methods in diffusion MRI of the spinal cord

Haykel Snoussi; Emmanuel Caruyer; Julien Cohen-Adad; Olivier Commowick; Benoit Combes; Elise Bannier; Anne Kerbrat; Christian Barillot

Geometric evaluation of distortion correction methods in diffusion MRI of the spinal cord

Haykel Snoussi ^{1, *} Emmanuel Caruyer ¹ Julien Cohen-Adad ² Olivier Commowick ¹ Benoit Combes ¹ Elise Bannier ^{1, 3} Anne Kerbrat ^{3, 1} Christian Barillot ¹

* Corresponding author

1 VisAGeS - Vision, Action et Gestion d'informations en Santé

INSERM - Institut National de la Santé et de la Recherche Médicale : U1228, Inria Rennes – Bretagne Atlantique , IRISA_D5 - SIGNAUX ET IMAGES NUMÉRIQUES, ROBOTIQUE

2 EPM - École Polytechnique de Montréal

3 CHU Pontchaillou [Rennes]

Abstract : Acquiring and processing Diffusion MRI in spinal cord present inherent challenges. Differences in magnetic susceptibility between soft tissues, air and bone make the magnetic field of spinal cord non-uniform and inhomogeneous. In this context various procedures were proposed for correcting this distortion. In this work, we propose novel geometric statistics to measure the alignment of the reconstructed diffusion model with the apparent centerline of the spine. In parallel of the correlation with an anatomical T2-weighted image, we show the utility of these statistics to study and evaluate the impact of distortion correction by comparing 3 distortion correction methods from reversed gradient polarity strategy.

Keywords : Distortion correction Diffusion MRI Spinal Cord

Document type :

Conference papers

Domain :

Life Sciences [q-bio] / Neurons and Cognition [q-bio.NC]

Life Sciences [q-bio] / Biotechnology

Complete list of metadatas

https://www.hal.inserm.fr/inserm-01986723
Contributor : Emmanuel Caruyer <>
Submitted on : Saturday, January 19, 2019 - 9:28:52 AM
Last modification on : Thursday, June 13, 2019 - 1:17:45 PM

snoussi-caruyer-etal-isbi2019....

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