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

August 2023 Zaineb Amor, Chaithya Giliyar Radhakrishna, Caroline Le Ster, et al. Joint Annual Meeting ISMRM-ESMRMB & ISMRT 31st Annual Meeting · Conference abstract
#SPARKLING #Non-Cartesian Sampling #Compressed Sensing #fMRI #Field Inhomogeneity #MRI

Abstract

The benefit of retrospective correction of static and dynamic B0 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 0^th order contributions is enough to enhance the image quality and tSNR significantly (up to 22% gain in median tSNR).

Details

  • Type of work: Conference abstract
  • Venue: Joint Annual Meeting ISMRM-ESMRMB & ISMRT 31st Annual Meeting
  • Published: 3 August 2023
  • DOI: 10.58530/2022/2360
  • Authors: Zaineb Amor, Chaithya Giliyar Radhakrishna, Caroline Le Ster, Guillaume Daval-Frérot, Nicolas Boulant, Franck Mauconduit, Christian Mirkes, Philippe Ciuciu, and Alexandre Vignaud
  • Cited by: 1 times (OpenAlex)
  • Data sources: ref.bib, OpenAlex

BibTeX

@inproceedings{amor2022b0,
  title={B0 field distortions monitoring and correction for 3D non-Cartesian fMRI acquisitions using a field camera: Application to 3D-SPARKLING at 7T},
  author={Amor, Zaineb and Radhakrishna, Chaithya Giliyar and Le Ster, Caroline and Daval-Fr{\'e}rot, Guillaume and Boulant, Nicolas and Mauconduit, Franck and Mirkes, Christian and Ciuciu, Philippe and Vignaud, Alexandre},
  booktitle={Joint Annual Meeting ISMRM-ESMRMB \& ISMRT 31st Annual Meeting},
  year={2022}
}