Singh, Imraj RD;
Kereta, Željko;
Denker, Alexander;
Barbano, Riccardo;
Jin, Bangti;
Thielemans, Kris;
Arridge, Simon;
(2024)
MR-blob: Coordinate-Transformed Blobs for Parallel MRI Reconstruction.
In:
Proceedings of the 2024 ISMRM & ISMRT Annual Meeting & Exhibition.
International Society for Magnetic Resonance in Medicine (ISMRM): Singapore, Singapore.
(In press).
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Abstract
Motivation: Reducing the number of parameters needed to represent and reconstruct parallel MRI measurements. Goal: Reconstruct parallel MRI measurements with coordinate-transformed Gaussian functions (blobs) where the forward model is formulated directly. We term this MR-blob. Approach: MR-blob directly represents parallel MRI measurements; where coil sensitivities are modelled as isotropic Gaussians and the image is represented by coordinate-transformed blobs. Results: Noisy, undersampled parallel MRI simulations of Shepp-Logan phantom are reconstructed with a pixelised image, a coordinatetransformed blob-based image, and MR-blob; all with total variation regularisation. Quality measures are shown to be consistent across methods and regularisation strengths.
| Type: | Proceedings paper |
|---|---|
| Title: | MR-blob: Coordinate-Transformed Blobs for Parallel MRI Reconstruction |
| Event: | 2024 ISMRM & ISMRT Annual Meeting & Exhibition |
| Location: | Singapore |
| Dates: | 4 May 2024 - 9 May 2024 |
| Open access status: | An open access version is available from UCL Discovery |
| Publisher version: | https://www.ismrm.org/24m/ |
| Language: | English |
| Additional information: | This version is the author manuscript. For information on re-use, please refer to the publisher's terms and conditions. |
| Keywords: | parallel imaging, reconstruction, MRI, blobs |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Computer Science |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10181468 |
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