GATE simulations for small animal SPECT/PET using voxelized phantoms and rotating-head detectors

Sakellios, N; Rubio, JL; Karakatsanis, N; Kontaxakis, G; Loudos, G; Santos, A; Nikita, K; Majewski, S

dc.contributor.author	Sakellios, N	en
dc.contributor.author	Rubio, JL	en
dc.contributor.author	Karakatsanis, N	en
dc.contributor.author	Kontaxakis, G	en
dc.contributor.author	Loudos, G	en
dc.contributor.author	Santos, A	en
dc.contributor.author	Nikita, K	en
dc.contributor.author	Majewski, S	en
dc.date.accessioned	2014-03-01T02:51:06Z
dc.date.available	2014-03-01T02:51:06Z
dc.date.issued	2007	en
dc.identifier.issn	10957863	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/35363
dc.subject.other	Rotating-head detectors	en
dc.subject.other	Tungsten collimator	en
dc.subject.other	Animals	en
dc.subject.other	Cameras	en
dc.subject.other	Computer simulation	en
dc.subject.other	Image analysis	en
dc.subject.other	Phosphors	en
dc.subject.other	Positron emission tomography	en
dc.title	GATE simulations for small animal SPECT/PET using voxelized phantoms and rotating-head detectors	en
heal.type	conferenceItem	en
heal.identifier.primary	10.1109/NSSMIC.2006.354305	en
heal.identifier.secondary	http://dx.doi.org/10.1109/NSSMIC.2006.354305	en
heal.identifier.secondary	4179419	en
heal.publicationDate	2007	en
heal.abstract	GATE (Geant4 Application for Tomographic Emission) simulation toolkit has become a well validated toolkit for the simulation of SPECT and PET systems. A very important feature of GATE is that it allows modelling of time-dependent phenomena. In addition, complex voxelized object such as realistic anthropomorphic or small animal phantoms can be used as emission sources. In this work two small field of view scanners have been evaluated experimentally, modelled in GATE and mice studies have been simulated using MOBY mouse phantom. Two scanners have been simulated: The first one is a mouse sized gamma camera (field of view is 5×10cm) that is based on two Hamamatsu H8500 PSPMTs, a NaI pixelized scintillator and a tungsten collimator with hexagonal parallel holes. The system has been modelled in GATE and good agreement has been found between simulation and experimental results. MOBY mouse has been introduced as a voxelized source and planar and tomography simulations were carried out. The second small animal PET scanner has four heads which are equipped with a H8500 PSPMTs and a pixelated LYSO scintillator. System's geometry has been modelled in GATE. The results of both systems simulation and comparison between simulation and experimental data are presented. In addition, mouse bone scans were simulated both for SPECT and PET and tomographic image are derived. The presented methodology is aimed to provide all necessary tools in order to perform optimized simulations of small animal emission tomography scans. © 2006 IEEE.	en
heal.journalName	IEEE Nuclear Science Symposium Conference Record	en
dc.identifier.doi	10.1109/NSSMIC.2006.354305	en
dc.identifier.volume	4	en
dc.identifier.spage	2000	en
dc.identifier.epage	2003	en