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Daniel Gallichan
Researcher at Cardiff University
Publications - 60
Citations - 1697
Daniel Gallichan is an academic researcher from Cardiff University. The author has contributed to research in topics: Iterative reconstruction & Image quality. The author has an hindex of 23, co-authored 60 publications receiving 1521 citations. Previous affiliations of Daniel Gallichan include École Polytechnique Fédérale de Lausanne & John Radcliffe Hospital.
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Journal ArticleDOI
A calibration method for quantitative BOLD fMRI based on hyperoxia.
TL;DR: The hyperoxia technique is able to provide an estimate of the calibration constant that has lower overall intersubject and intersession variability compared to the hypercapnia approach.
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Retrospective Correction of Involuntary Microscopic Head Movement Using Highly Accelerated Fat Image Navigators (3D FatNavs) at 7T
TL;DR: A three‐dimensional gradient echo volume is used in combination with a fat‐selective excitation as a 3D motion navigator (3D FatNav) for retrospective correction of microscopic head motion during high‐resolution 3D structural scans of extended duration.
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Addressing a systematic vibration artifact in diffusion-weighted MRI.
Daniel Gallichan,Jan Scholz,Andreas J. Bartsch,Timothy E.J. Behrens,Matthew D. Robson,Karla L. Miller +5 more
TL;DR: A way is suggested to improve the interpretation of affected DTI data by including a co‐regressor which accounts for the empirical response of regions affected by the artifact, and that subsequent increases in TE can be avoided by employing parallel acceleration.
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Flow-metabolism coupling in human visual, motor, and supplementary motor areas assessed by magnetic resonance imaging.
Peter A. Chiarelli,Daniel P. Bulte,Daniel Gallichan,Stefan K. Piechnik,Richard G. Wise,Peter Jezzard +5 more
TL;DR: The results support the existence of regional differences in neurovascular coupling, and argue for the importance of achieving optimal accuracy in hypercapnia calibrations to resolve method‐dependent variations in published results.
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Measuring the effects of remifentanil on cerebral blood flow and arterial arrival time using 3D GRASE MRI with pulsed arterial spin labelling
Bradley J. MacIntosh,Kyle T.S. Pattinson,Daniel Gallichan,Imran Ahmad,Karla L. Miller,David A. Feinberg,Richard G. Wise,Peter Jezzard +7 more
TL;DR: Significant differences between physiologic conditions were observed in both cerebral blood flow and arterial arrival time maps, indicating that 3D GRASE-ASL has the sensitivity to study changes in physiology at a voxel level.