Title
Evaluation of STIR Library Adapted for PET Scanners with Non-Cylindrical Geometry
Abstract
Software for Tomographic Image Reconstruction (STIR) is an open source C++ library used to reconstruct single photon emission tomography and positron emission tomography (PET) data. STIR has an experimental scanner geometry modelling feature to accurately model detector placement. In this study, we test and improve this new feature using several types of data: Monte Carlo simulations and measured phantom data acquired from a dedicated brain PET prototype scanner. The results show that the new geometry class applied to non-cylindrical PET scanners improved spatial resolution, uniformity, and image contrast. These are directly observed in the reconstructions of small features in the test quality phantom. Overall, we conclude that the revised "BlocksOnCylindrical" class will be a valuable addition to the next STIR software release with adjustments of existing features (Single Scatter Simulation, forward projection, attenuation corrections) to "BlocksOnCylindrical".
Year
DOI
Venue
2022
10.3390/jimaging8060172
JOURNAL OF IMAGING
Keywords
DocType
Volume
tomography, image reconstruction, brain, imaging
Journal
8
Issue
ISSN
Citations 
6
2313-433X
0
PageRank 
References 
Authors
0.34
0
6
Name
Order
Citations
PageRank
Viet Dao100.34
Ekaterina Mikhaylova200.34
Max L Ahnen300.34
Jannis Fischer400.34
Kris Thielemans562.29
Charalampos Tsoumpas600.68