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Joint Activity/Attenuation Reconstruction in SPECT Using Photopeak and Scatter Sinograms

Bousse, A; Sidlesky, A; Roth, N; Rashidnasab, A; Thielemans, K; Hutton, BF; (2016) Joint Activity/Attenuation Reconstruction in SPECT Using Photopeak and Scatter Sinograms. In: (Proceedings) IEEE Nuclear Science Symposium / Medical Imaging Conference / Room-Temperature Semiconductor Detector Workshop (NSS/MIC/RTSD). IEEE Green open access

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Abstract

This work presents a joint activity/attenuation reconstruction method in SPECT, based on the maximisation of the scatter and non-scatter data joint log-likelihood. The activity image is updated with standard expectation maximisation (EM) whereas the attenuation is updated with a quasi-Newton line-search. Results on simulation demonstrates that the utilisation of scatter considerably reduces the ill-posedness of the initial reconstruction problem with non-scatter counts only. Results on phantom data show that using scatter enables myocardial reconstruction similar to an EM reconstruction with CT attenuation correction

Type: Proceedings paper
Title: Joint Activity/Attenuation Reconstruction in SPECT Using Photopeak and Scatter Sinograms
Event: IEEE Nuclear Science Symposium / Medical Imaging Conference / Room-Temperature Semiconductor Detector Workshop (NSS/MIC/RTSD)
Location: Strasbourg, FRANCE
Dates: 29 October 2016 - 06 November 2016
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/NSSMIC.2016.8069448
Publisher version: https://doi.org/10.1109/NSSMIC.2016.8069448
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: Science & Technology, Technology, Physical Sciences, Life Sciences & Biomedicine, Engineering, Electrical & Electronic, Nuclear Science & Technology, Physics, Applied, Radiology, Nuclear Medicine & Medical Imaging, Engineering, Physics, SPECT, scatter, attenuation estimation, maximum-likelihood, OF-FLIGHT PET, ATTENUATION
UCL classification: UCL > Provost and Vice Provost Offices
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 > Metabolism and Experi Therapeutics
URI: http://discovery.ucl.ac.uk/id/eprint/10052086
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