Inter-crystal scattering

Quantification of Inter-crystal Scattering and Parallax Effect in Pixelated High Resolution Small Animal Gamma Camera A Monte Carlo Study... 

Keywords— Inter-crystal scattering. Penetration, GATE, Small Animal imaging, Pixelated Scintilator. 

Quantification of Inter-crystal Scattering and Parallax Effect... 

Rafecas M, Boning G, Pichler B, et al. (2003) Inter-crystal scatter in a dual layer, high resolution LSO-APD positron emission tomograph. Physics in Medicine and Biology 48 821... 

Rasouli M, Ay M, Takavar A, et al. (2009) The Influence of Inter-Crystal Scattering on Detection Efficiency of Dedicated Breast Gamma Camera A Monte Carlo Study. Springer, pp. 2451-2454. 

Quantitative Assessment of the Influence of Crystal Material and Size on the Inter Crystal Scattering and Penetration Effect in Pixilated Dual Head Small Animal... 

Abstract— One of the most discriminator parameters for all PET scanners systems, is spatial resolution. The dimension and pitch of crystal elements, in scintillator based systems, impose some deteriorative limitation on spatial resolution. Whereas, the detraction in the scintillator size, provide increment on the fraction of gamma rays perpendicularly incident on the surface of the crystal arrangement, causing inter-crystal scattering and parallax error. 

Y. Shao, et al., "A study of inter-crystal scatter in small scintillator arrays designed for high resolution PET imaging," Nuclear Science, IEEE Transactions on, vol. 43, pp. 1938-1944, 2002. 

S. Rechka, et al., "LabPET inter-crystal scatter study using GATE," 2010, pp. 3988-3994. 

As we have described, a great deal of experimental data on the q 0 vibrational energy levels in the metal azides have been obtained in the last few years. A consistent picture of the internal and external modes in different azide lattices has emerged from these studies. The question of the degree of lattice ionicity in different azide lattices has been raised as a consequence of the available data, but needs detailed theoretical analysis. Particularly noteworthy has been the recent measurement by coherent neutron inelastic scattering of vibrational modes in different directions of the Brillouin zone in a metal azide crystal—KNa- More sophisticated analyses of diffraction data have now yielded precise inter- and intraionic bond lengths, thermal amplitudes of azide ion motions and, most recently, the valence electron density about N3 in KN3, all of which provide important additional input for the characterization of interatomic forces in azides. 

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