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GATE: a simulation toolkit for PET and SPECT

S Jan1, G Santin2,24, D Strul2,25, S Staelens3, K Assié4, D Autret5, S Avner6, R Barbier7, M Bardiès5, P M Bloomfield8, D Brasse6, V Breton9, P Bruyndonckx10, I Buvat4, A F Chatziioannou11, Y Choi12, Y H Chung12, C Comtat1, D Donnarieix9,13, L Ferrer5, S J Glick14, C J Groiselle14, D Guez15, P-F Honore15, S Kerhoas-Cavata15, A S Kirov16, V Kohli11, M Koole3, M Krieguer10, D J van der Laan17, F Lamare18, G Largeron7, C Lartizien19, D Lazaro9, M C Maas17, L Maigne9, F Mayet20, F Melot20, C Merheb15, E Pennacchio7, J Perez21, U Pietrzyk21, F R Rannou11,22, M Rey2, D R Schaart17, C R Schmidtlein16, L Simon2,26, T Y Song12, J-M Vieira2, D Visvikis18, R Van de Walle3, E Wieërs10,23 and C Morel2

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Monte Carlo simulation is an essential tool in emission tomography that can assist in the design of new medical imaging devices, the optimization of acquisition protocols and the development or assessment of image reconstruction algorithms and correction techniques. GATE, the Geant4 Application for Tomographic Emission, encapsulates the Geant4 libraries to achieve a modular, versatile, scripted simulation toolkit adapted to the field of nuclear medicine. In particular, GATE allows the description of time-dependent phenomena such as source or detector movement, and source decay kinetics. This feature makes it possible to simulate time curves under realistic acquisition conditions and to test dynamic reconstruction algorithms. This paper gives a detailed description of the design and development of GATE by the OpenGATE collaboration, whose continuing objective is to improve, document and validate GATE by simulating commercially available imaging systems for PET and SPECT. Large effort is also invested in the ability and the flexibility to model novel detection systems or systems still under design. A public release of GATE licensed under the GNU Lesser General Public License can be downloaded at http://www-lphe.epfl.ch/GATE/. Two benchmarks developed for PET and SPECT to test the installation of GATE and to serve as a tutorial for the users are presented. Extensive validation of the GATE simulation platform has been started, comparing simulations and measurements on commercially available acquisition systems. References to those results are listed. The future prospects towards the gridification of GATE and its extension to other domains such as dosimetry are also discussed.


PACS

87.57.uh Single photon emission computed tomography (SPECT)

87.57.uk Positron emission tomography (PET)

02.50.Ng Distribution theory and Monte Carlo studies

Subjects

Computational physics

Medical physics

Dates

Issue 19 (7 October 2004)

Received 14 May 2004, in final form 26 July 2004

Published 10 September 2004



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