DocumentCode :
2425044
Title :
A simple data loss model for positron camera systems
Author :
Eriksson, Lars
Author_Institution :
Karolinska Inst., Stockholm
fYear :
1993
fDate :
31 Oct-6 Nov 1993
Firstpage :
1548
Abstract :
A simple model to describe data losses in PET cameras is presented. The model is not intended to be used primarily for dead time corrections in existing scanners, even if this may be possible. Instead the model is intended to be used for data simulations in order to determine the figures of merits of future camera systems based on data handling state-of-art solutions. The model assumes the data loss to be factorized into two components, one describing the detector or block-detector performance and the other the remaining data handling such as coincidence determinations, data transfer and data storage. Two modern positron camera systems have been investigated in terms of this model. These are the new Siemens-CTI systems, Ecat Exact and Ecat Exact HR, both with an axial field-of-view (FOV) covering around 15 cm. They both have retractable septa and can acquire data from the whole volume within the FOV and can reconstruct volume image data. An example is given how to use the model for live time calculations in a futuristic large axial FOV cylindrical system
Keywords :
biomedical equipment; cameras; modelling; positron emission tomography; 15 cm; Ecat Exact; Siemens-CTI systems; axial field-of-view; coincidence determinations; data handling; data storage; data transfer; dead time corrections; diagnostic nuclear medicine; figure of merit; medical diagnostic imaging; positron camera systems; retractable septa; simple data loss model; Cameras; Data analysis; Data handling; Data processing; Differential equations; Positrons; Scattering; Solid scintillation detectors;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference, 1993., 1993 IEEE Conference Record.
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-1487-5
Type :
conf
DOI :
10.1109/NSSMIC.1993.373634
Filename :
373634
Link To Document :
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