Hybrid coded aperture and Compton imaging using an active mask

Autor:	Larry J. Schultz, R.M. Kippen, David Palmer, David K. Wehe, Andrew S. Hoover, M. Galassi, M.J. Toolin, B. Harris, M.V. Hynes, Mark S. Wallace, Shawn Tornga, J.E. McElroy, Berthold K. P. Horn, D. Wakeford, Richard C. Lanza, Michal Mocko
Rok vydání:	2009
Předmět:	Physics Nuclear and High Energy Physics Code development business.industry Compton imaging Detector Imaging algorithm Image reconstruction algorithm Optics Code (cryptography) Coded aperture business Instrumentation Algorithm Background radiation
Zdroj:	Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 608:267-274
ISSN:	0168-9002
Popis:	The trimodal imager (TMI) images gamma-ray sources from a mobile platform using both coded aperture (CA) and Compton imaging (CI) modalities. In this paper we will discuss development and performance of image reconstruction algorithms for the TMI. In order to develop algorithms in parallel with detector hardware we are using a GEANT4 [J. Allison, K. Amako, J. Apostolakis, H. Araujo, P.A. Dubois, M. Asai, G. Barrand, R. Capra, S. Chauvie, R. Chytracek, G. Cirrone, G. Cooperman, G. Cosmo, G. Cuttone, G. Daquino, et al., IEEE Trans. Nucl. Sci. NS-53 (1) (2006) 270] based simulation package to produce realistic data sets for code development. The simulation code incorporates detailed detector modeling, contributions from natural background radiation, and validation of simulation results against measured data. Maximum likelihood algorithms for both imaging methods are discussed, as well as a hybrid imaging algorithm wherein CA and CI information is fused to generate a higher fidelity reconstruction.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1bc814f733610b8f89ffea92efc71ad6 https://doi.org/10.1016/j.nima.2009.06.043 Zobrazit plný text záznamu Full Text from ScienceDirect