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Evaluation of a Modular PET System Architecture with Synchronization over Data Links

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Evaluation of a Modular PET System Architecture with Synchronization over Data Links

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dc.contributor.author Aliaga Varea, Ramón José es_ES
dc.contributor.author Herrero Bosch, Vicente es_ES
dc.contributor.author Monzó Ferrer, José María es_ES
dc.contributor.author Ros García, Ana es_ES
dc.contributor.author Gadea Gironés, Rafael es_ES
dc.contributor.author Colom Palero, Ricardo José es_ES
dc.date.accessioned 2015-01-15T13:53:56Z
dc.date.available 2015-01-15T13:53:56Z
dc.date.issued 2014-02
dc.identifier.issn 0018-9499
dc.identifier.uri http://hdl.handle.net/10251/46106
dc.description.abstract A DAQ architecture for a PET system is presented that focuses on modularity, scalability and reusability. The system defines two basic building blocks: data acquisitors and concentra- tors, which can be replicated in order to build a complete DAQ of variable size. Acquisition modules contain a scintillating crystal and either a position-sensitive photomultiplier (PSPMT) or an array of silicon photomultipliers (SiPM). The detector signals are processed by AMIC, an integrated analog front-end that generates programmable analog outputs which contain the first few statistical moments of the light distribution in the scintillator. These signals are digitized at 156.25 Msamples/s with free-run- ning ADCs and sent to an FPGA which detects single gamma events, extracts position and time information online using digital algorithms, and submits these data to a concentrator module. Concentrator modules collect single events from acquisition modules and perform coincidence detection and data aggregation. A synchronization scheme over data links is implemented that calibrates each link s latency independently, ensuring that there are no limitations on module mobility, and that the architecture is arbitrarily scalable. Prototype boards with both acquisition and concentration functionality have been built for evaluation pur- poses. The performance of a small PET system with two detectors based on continuous scintillators is presented. A synchronization error below 50 ps rms is measured, and energy resolutions of 19% and 24% and timing resolutions of 2.0 ns and 4.7 ns FWHM are obtained for PMT and SiPM photodetectors, respectively. es_ES
dc.description.sponsorship Manuscript received June 25, 2013; revised November 06, 2013; accepted January 03, 2014. Date of publication January 29, 2014; date of current version February 06, 2014. This work was supported in part by the Spanish Ministry of Science and Innovation under CICYT Grant FIS2010-21216-C02-02. en_EN
dc.language Inglés es_ES
dc.publisher Institute of Electrical and Electronics Engineers (IEEE) es_ES
dc.relation Spanish Ministry of Science and Innovation under CICYT Grant FIS2010-21216-C02-02 es_ES
dc.relation.ispartof IEEE Transactions on Nuclear Science es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject AMIC es_ES
dc.subject Clock distribution es_ES
dc.subject Data acquisition (DAQ) es_ES
dc.subject Modular electronics es_ES
dc.subject Positron emission tomography (PET) es_ES
dc.subject Self-calibration es_ES
dc.subject Serial links es_ES
dc.subject Silicon photomultiplier (SiPM) es_ES
dc.subject Synchronization es_ES
dc.subject.classification TECNOLOGIA ELECTRONICA es_ES
dc.title Evaluation of a Modular PET System Architecture with Synchronization over Data Links es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1109/TNS.2014.2298399
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Instituto de Instrumentación para Imagen Molecular - Institut d'Instrumentació per a Imatge Molecular es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Ingeniería Electrónica - Departament d'Enginyeria Electrònica es_ES
dc.description.bibliographicCitation Aliaga Varea, RJ.; Herrero Bosch, V.; Monzó Ferrer, JM.; Ros García, A.; Gadea Gironés, R.; Colom Palero, RJ. (2014). Evaluation of a Modular PET System Architecture with Synchronization over Data Links. IEEE Transactions on Nuclear Science. 61(1):88-98. doi:10.1109/TNS.2014.2298399 es_ES
dc.description.accrualMethod Senia es_ES
dc.relation.publisherversion http://dx.doi.org/10.1109/TNS.2014.2298399 es_ES
dc.description.upvformatpinicio 88 es_ES
dc.description.upvformatpfin 98 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 61 es_ES
dc.description.issue 1 es_ES
dc.relation.senia 257328


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