Publication: Optimization and evaluation of reconstruction-based compensation methods and reconstruction parameters for Tc-99m MIBI parathyroid SPECT
Issued Date
2015-01-01
Resource Type
ISSN
1724191X
11201797
11201797
Other identifier(s)
2-s2.0-84921767375
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Mahidol University
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SCOPUS
Bibliographic Citation
Physica Medica. Vol.31, No.2 (2015), 159-166
Suggested Citation
Tawatchai Ekjeen, Chiraporn Tocharoenchai, Pawana Pusuwan, George S.K. Fung, Michael Ghaly, Yong Du, Eric C. Frey Optimization and evaluation of reconstruction-based compensation methods and reconstruction parameters for Tc-99m MIBI parathyroid SPECT. Physica Medica. Vol.31, No.2 (2015), 159-166. doi:10.1016/j.ejmp.2014.12.005 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/35620
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Title
Optimization and evaluation of reconstruction-based compensation methods and reconstruction parameters for Tc-99m MIBI parathyroid SPECT
Abstract
© 2014 Associazione Italiana di Fisica Medica. The value of Tc-99m MIBI parathyroid SPECT for localizing parathyroid hyperplasia in chronic renal failure patients remains inconclusive due to limited image quality. Advanced reconstruction methods to improve image quality have been developed but require optimization and evaluation. The goal of this study was to optimize and evaluate compensation methods and reconstruction parameters for Tc-99m MIBI parathyroid SPECT. A phantom population and projection data that modelled clinically realistic variations found in patients were simulated. The 3D OS-EM reconstruction with compensation for attenuation, detector response and scatter in various combinations were studied. For each compensation, the number of updates for OS-EM and the cutoff frequency of a 3D Butterworth filter were optimized and evaluated using anthropomorphic model observer. With optimal parameters, the method with compensation for attenuation and detector response, with or without the addition of scatter compensation, provided the highest lesion detectability for Tc-99m MIBI parathyroid SPECT.