B0 field distortions monitoring and correction for 3D non-Cartesian fMRI acquisitions using a field camera: Application to 3D-SPARKLING at 7T - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2022

B0 field distortions monitoring and correction for 3D non-Cartesian fMRI acquisitions using a field camera: Application to 3D-SPARKLING at 7T

Résumé

The benefit of retrospective correction of static and dynamic field imperfections was studied on non-Cartesian compressed sensing-based acquisition patterns by taking as an example 3D-SPARKLING encoding scheme. Long-TR dynamic acquisitions of T2*-weighted MRI (fMRI-like) volumes were acquired at 7T, retrospectively corrected, and the evaluation of the corrections was based on the image quality and the gain in temporal signal-to-noise ratio (tSNR). We found that correcting for the static and dynamic order contributions is enough to enhance the image quality and tSNR significantly (up to 22% gain in median tSNR)
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Dates et versions

hal-03901242 , version 1 (15-12-2022)

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  • HAL Id : hal-03901242 , version 1

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Zaineb Amor, Chaithya Giliyar Radhakrishna, Caroline Le Ster, Guillaume Daval-Frérot, Nicolas Boulant, et al.. B0 field distortions monitoring and correction for 3D non-Cartesian fMRI acquisitions using a field camera: Application to 3D-SPARKLING at 7T. Joint Annual Meeting ISMRM-ESMRMB & ISMRT 31st Annual Meeting, May 2022, London, United Kingdom. ⟨hal-03901242⟩
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