Low cost FPGA based data acquisition system for a gamma imaging probe

dc.contributor.author	Φυσικόπουλος, Ελευθέριος	el
dc.contributor.author	Γεωργίου, Μαρία	el
dc.contributor.author	Λούντος, Γεώργιος	el
dc.contributor.author	Ματσόπουλος, Γεώργιος	el
dc.date.accessioned	2015-06-05T16:42:40Z
dc.date.available	2015-06-05T16:42:40Z
dc.date.issued	2015-06-05
dc.identifier.uri	http://hdl.handle.net/11400/15156
dc.rights	Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/us/	*
dc.source	http://iopscience.iop.org	en
dc.subject	Digital electronic circuits
dc.subject	Digital signal processing
dc.subject	Performance parameters
dc.subject	Παράμετροι απόδοσης
dc.subject	Ψηφιακά ηλεκτρονικά κυκλώματα
dc.subject	Ψηφιακή επεξεργασία σήματος
dc.title	Low cost FPGA based data acquisition system for a gamma imaging probe	en
heal.type	journalArticle
heal.classification	Medicine
heal.classification	Medical physics
heal.classification	Ιατρική
heal.classification	Ιατρική φυσική
heal.classificationURI	http://id.loc.gov/authorities/subjects/sh00006614
heal.classificationURI	http://id.loc.gov/authorities/subjects/sh85083001
heal.classificationURI	N/A-Ιατρική
heal.classificationURI	N/A-Ιατρική φυσική
heal.identifier.secondary	DOI: 10.1088/1748-0221/8/11/T11004
heal.language	en
heal.access	free
heal.publicationDate	2013
heal.bibliographicCitation	Fysikopoulos, E., Georgiou, M., Loudos, G. and Matsopoulos, G. (2013) Low cost FPGA based data acquisition system for a gamma imaging probe. "Journal of Instrumentation", 8 (11)	en
heal.abstract	We present the development of a low cost field programmable gate arrays (FPGA) based data acquisition system for a gamma imaging probe proposed for sentinel lymph node (SLN) mapping. Radioguided surgery using a gamma probe is an established practice and has been widely introduced in SLN biopsies. For such applications, imaging systems require compact readout electronics and flexibility. Embedded systems implemented in the FPGA technology offer new possibilities in data acquisition for nuclear medicine imagers. FPGAs are inexpensive compared to application specific integrated circuits (ASICs), usually used for the readout electronics of dedicated gamma cameras and their size is rather small. In this study, cost effective analog to digital converters (ADCs) were used and signal processing algorithms were implemented in the FPGA to extract the energy and position information. The analog front-end electronics were carefully designed taking into account the low sampling rate of the ADCs. The reference gamma probe has a small field of view (2.5 cm × 2.5 cm) and is based on the R8900U-00-C12 position sensitive photomultiplier tube (PSPMT) coupled to a pixellated CsI(Na) scintillator with 1 mm × 1 mm × 5 mm crystal element size. Measurements were carried out using a general purpose collimator and 99mTc sources emitted at 140 keV. Performance parameters for the imaging gamma probe were compared with those obtained when data were acquired using the standard NIM (Nuclear Instrumentation Modules) electronics and found to be in very good agreement, which demonstrates the efficiency of the proposed implementation.	en
heal.journalName	Journal of Instrumentation	en
heal.journalType	peer-reviewed
heal.fullTextAvailability	true