ArticleHuman brain mapping2023
Improved dynamic distortion correction for fMRI using single-echo EPI and a readout-reversed first image (REFILL).
Article in Human brain mapping, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- Advancing Cerebro-cerebellar Network Imaging with Ultra-high Field (7T) MRI: Progress and Future Challenges.Cerebellum (London, England) · 2026Review
- Bridging the gap with invasive imaging: promises and challenges of a new generation of ultrahigh resolution fMRI.bioRxiv : the preprint server for biology · 2026Article
- "Dense Amygdala": Extensive Complex-valued Functional MRI of the Ventral and Medial Temporal Lobe during Passive Movie Watching in Three Individuals.Scientific data · 2026Article
- Complex multi-echo fMRI dataset: New strategies in processing of multi-echo data.Scientific data · 2026Article
- Cerebellar imaging for neuroscience at 9.4 T.Magnetic resonance in medicine · 2025Article
- Accelerated Navigator for Rapid ∆BNMR in biomedicine · 2025Article
- Dynamic field mapping and distortion correction using single-shot blip-rewound EPI and joint multi-echo reconstruction.Magnetic resonance in medicine · 2024Article
- Improved dynamic distortion correction for fMRI using single-echo EPI and a readout-reversed first image (REFILL).Human brain mapping · 2023Article
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Authors and funding
14 authors.
Funding
Abstract
The boundaries between tissues with different magnetic susceptibilities generate inhomogeneities in the main magnetic field which change over time due to motion, respiration and system instabilities. The dynamically changing field can be measured from the phase of the fMRI data and corrected. However, methods for doing so need multi-echo data, time-consuming reference scans and/or involve error-prone processing steps, such as phase unwrapping, which are difficult to implement robustly on the MRI host. The improved dynamic distortion correction method we propose is based on the phase of the single-echo EPI data acquired for fMRI, phase offsets calculated from a triple-echo, bipolar reference scan of circa 3-10 s duration using a method which avoids the need for phase unwrapping and an additional correction derived from one EPI volume in which the readout direction is reversed. This Reverse-Encoded First Image and Low resoLution reference scan (REFILL) approach is shown to accurately measure B
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