Title :
Three-dimensional imaging of hidden objects using positron emission backscatter
Author :
Lee, Dongwon ; Cowee, Misa ; Fenimore, Ed ; Galassi, Mark ; Looker, Quinn ; Vogan-McNeil, Wendy ; Stonehill, Laura ; Wallace, Mark
Author_Institution :
Los Alamos Nat. Lab., Los Alamos, NM, USA
fDate :
Oct. 24 2009-Nov. 1 2009
Abstract :
Positron emission backscatter imaging is a technique for interrogation and three-dimensional (3-D) reconstruction of hidden objects when we only have access to the objects from one side. Using time-of-flight differences in detected direct and backscattered positron-emitted photons, we construct 3-D images of target objects. Recently at Los Alamos National Laboratory, a fully three-dimensional imaging system has been built and the experimental results are discussed in this paper. Quantitative analysis of images reconstructed in both two- and three-dimensions are also presented.
Keywords :
image reconstruction; radiography; radioisotope imaging; backscattered positron emitted photons; direct positron emitted photons; hidden object 3D imaging; hidden object 3D reconstruction; positron emission backscatter imaging; time of flight differences; Backscatter; Image reconstruction; Laboratories; Light scattering; Object detection; Optical imaging; Particle scattering; Position sensitive particle detectors; Positrons; Radioactive decay;
Conference_Titel :
Nuclear Science Symposium Conference Record (NSS/MIC), 2009 IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4244-3961-4
Electronic_ISBN :
1095-7863
DOI :
10.1109/NSSMIC.2009.5402164
