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Motion estimation and correction for simultaneous PET/MR using SIRF and CIL

Brown, R; Kolbitsch, C; Delplancke, C; Papoutsellis, E; Mayer, J; Ovtchinnikov, E; Pasca, E; ... Thielemans, K; + view all (2021) Motion estimation and correction for simultaneous PET/MR using SIRF and CIL. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences , 379 (2204) , Article 20200208. 10.1098/rsta.2020.0208. Green open access

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Abstract

SIRF is a powerful PET/MR image reconstruction research tool for processing data and developing new algorithms. In this research, new developments to SIRF are presented, with focus on motion estimation and correction. SIRF's recent inclusion of the adjoint of the resampling operator allows gradient propagation through resampling, enabling the MCIR technique. Another enhancement enabled registering and resampling of complex images, suitable for MRI. Furthermore, SIRF's integration with the optimization library CIL enables the use of novel algorithms. Finally, SPM is now supported, in addition to NiftyReg, for registration. Results of MR and PET MCIR reconstructions are presented, using FISTA and PDHG, respectively. These demonstrate the advantages of incorporating motion correction and variational and structural priors. This article is part of the theme issue 'Synergistic tomographic image reconstruction: part 2'.

Type: Article
Title: Motion estimation and correction for simultaneous PET/MR using SIRF and CIL
Location: England
Open access status: An open access version is available from UCL Discovery
DOI: 10.1098/rsta.2020.0208
Publisher version: https://doi.org/10.1098/rsta.2020.0208
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: MR, Motion, PET, SIRF, correction, estimation
UCL classification: UCL
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences > Div of Medicine
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences > Div of Medicine > Department of Imaging
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 Med Phys and Biomedical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/10131780
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