Development of an FPGA-based data acquisition module for small animal PET
2006 (English)In: IEEE Transactions on Nuclear Science, ISSN 0018-9499, E-ISSN 1558-1578, Vol. 53, no 5, 2698-2703 p.Article in journal (Refereed) Published
We report on the design of a data acquisition (DAQ) module for a small animal PET camera developed at our institutes. During the design an important guideline was to develop a system which is built up from strictly identical DAQ modules, and which has no built-in hardware limitation on the maximum number of modules. The developed DAQ module comprises of an LSO scintillator crystal block, a position sensitive PMT, analog signal conditioning circuits, a digitizer, an field programmable gate array (FPGA) for digital signal processing, and a communication module through which the collected data are sent to a cluster of computers for postprocessing and storage. Instead of implementing hardware coincidence detection between the modules, we attach a precise time stamp to each event in our design, and the coincidence is determined by the data collecting computers during postprocessing. The digital CFD algorithm implemented in the FPGA gives a time resolution of 2 ns FWHM for real detector signals.
Place, publisher, year, edition, pages
2006. Vol. 53, no 5, 2698-2703 p.
data acquisition (DAQ), digital CFD, Ethernet, PET, small animal, crystals, scanner
Medical Engineering Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-16071DOI: 10.1109/tns.2006.876004ISI: 000241367100033ScopusID: 2-s2.0-33750425156OAI: oai:DiVA.org:kth-16071DiVA: diva2:334113
QC 201005252010-08-052010-08-052014-12-09Bibliographically approved