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
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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 |
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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 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 |
URI: | https://discovery.ucl.ac.uk/id/eprint/10052086 |
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