Kasper, Lars, Engel, Maria ![]() |
Abstract
We report the deployment of spiral acquisition for high-resolution structural imaging at 7T. Long spiral readouts are rendered manageable by an expanded signal model including static off-resonance and B0 dynamics along with k-space trajectories and coil sensitivity maps. Image reconstruction is accomplished by inversion of the signal model using an extension of the iterative non-Cartesian SENSE algorithm. Spiral readouts up to 25 ms are shown to permit whole-brain 2D imaging at 0.5 mm in-plane resolution in less than a minute. A range of options is explored, including proton-density and T2* contrast, acceleration by parallel imaging, different readout orientations, and the extraction of phase images. Results are shown to exhibit competitive image quality along with high geometric consistency.
Item Type: | Article |
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Date Type: | Published Online |
Status: | Published |
Schools: | Psychology Cardiff University Brain Research Imaging Centre (CUBRIC) |
Publisher: | Elsevier |
ISSN: | 1053-8119 |
Date of First Compliant Deposit: | 5 January 2023 |
Date of Acceptance: | 29 July 2017 |
Last Modified: | 02 Feb 2023 02:16 |
URI: | https://orca.cardiff.ac.uk/id/eprint/155043 |
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