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MR-blob: Coordinate-Transformed Blobs for Parallel MRI Reconstruction

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). Green open access

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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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