Comparison of inhomogeneity distortion correction methods in diffusion MRI of the spinal cord

Haykel Snoussi; Emmanuel Caruyer; Olivier Commowick; Elise Bannier; Anne Kerbrat; Christian Barillot

Comparison of inhomogeneity distortion correction methods in diffusion MRI of the spinal cord

Haykel Snoussi ^{1, *} Emmanuel Caruyer ¹ Olivier Commowick ¹ Elise Bannier ^{1, 2} Anne Kerbrat ³ 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 Département de Radiologie [CHU de Rennes]

3 Service de Neurologie [Rennes]

Abstract : Purpose / Introduction Diffusion MRI (dMRI) is a modality that describes the geometry of neural architecture. Diffusion images suffer from various artifacts originating from subject and physiological motion, eddy currents and B0-field inhomogeneity. These can severely affect image quality particularly in the spine region. However, strategies exist to correct these distortions, including co-registration, point spread function, phase field map and reversed gradient polarity method (RGPM). In this work, we focus on the comparative evaluation of correction methods using RGPM which provides best results [1]. More precisely, we compare Voss [1,2] plus two other recent methods: FSL’s Topup [3] and SPM’s HySCO [4].

Document type :

Conference papers

Domain :

Life Sciences [q-bio] / Bioengineering

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https://www.hal.inserm.fr/inserm-01579134
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