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
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].
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Haykel Snoussi, Emmanuel Caruyer, Olivier Commowick, Elise Bannier, Anne Kerbrat, et al.. Comparison of inhomogeneity distortion correction methods in diffusion MRI of the spinal cord. ESMRMB - 34th Annual Scientific Meeting European Society for Magnetic Resonance in Medecine and Biology, Oct 2017, Barcelone, Spain. ⟨inserm-01579134v2⟩

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