Region-Based Partial Volume Correction Techniques for PET Imaging : Sinogram Implementation and Robustness
Joint Authors
Kusano, Maggie
Caldwell, Curtis B.
Poon, Ian
Armstrong, Jennifer
Sattarivand, Mike
Szilagyi, Gregory M.
Source
International Journal of Molecular Imaging
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-12-17
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
Background/Purpose.
Limited spatial resolution of positron emission tomography (PET) requires partial volume correction (PVC).
Region-based PVC methods are based on geometric transfer matrix implemented either in image-space (GTM) or sinogram-space (GTMo), both with similar performance.
Although GTMo is slower, it more closely simulates the 3D PET image acquisition, accounts for local variations of point spread function, and can be implemented for iterative reconstructions.
A recent image-based symmetric GTM (sGTM) has shown improvement in noise characteristics and robustness to misregistration over GTM.
This study implements the sGTM method in sinogram space (sGTMo), validates it, and evaluates its performance.
Methods.
Two 3D sphere and brain digital phantoms and a physical sphere phantom were used.
All four region-based PVC methods (GTM, GTMo, sGTM, and sGTMo) were implemented and their performance was evaluated.
Results.
All four PVC methods had similar accuracies.
Both noise propagation and robustness of the sGTMo method were similar to those of sGTM method while they were better than those of GTMo method especially for smaller objects.
Conclusion.
The sGTMo was implemented and validated.
The performance of the sGTMo in terms of noise characteristics and robustness to misregistration is similar to that of the sGTM method and improved compared to the GTMo method.
American Psychological Association (APA)
Sattarivand, Mike& Armstrong, Jennifer& Szilagyi, Gregory M.& Kusano, Maggie& Poon, Ian& Caldwell, Curtis B.. 2013. Region-Based Partial Volume Correction Techniques for PET Imaging : Sinogram Implementation and Robustness. International Journal of Molecular Imaging،Vol. 2013, no. 2013, pp.1-12.
https://search.emarefa.net/detail/BIM-472080
Modern Language Association (MLA)
Kusano, Maggie…[et al.]. Region-Based Partial Volume Correction Techniques for PET Imaging : Sinogram Implementation and Robustness. International Journal of Molecular Imaging No. 2013 (2013), pp.1-12.
https://search.emarefa.net/detail/BIM-472080
American Medical Association (AMA)
Sattarivand, Mike& Armstrong, Jennifer& Szilagyi, Gregory M.& Kusano, Maggie& Poon, Ian& Caldwell, Curtis B.. Region-Based Partial Volume Correction Techniques for PET Imaging : Sinogram Implementation and Robustness. International Journal of Molecular Imaging. 2013. Vol. 2013, no. 2013, pp.1-12.
https://search.emarefa.net/detail/BIM-472080
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-472080