TY - GEN

T1 - Modeling all orders of scatter in nuclear medicine

AU - Gallas, B.

AU - Barrett, H. H.

N1 - Copyright:
Copyright 2004 Elsevier Science B.V., Amsterdam. All rights reserved.

PY - 1999

Y1 - 1999

N2 - The distribution of photons is described by the integrodifferential Boltzmann equation. However, this equation is difficult to solve because of the scatter integral and the size of the problem when discretized. A method is presented that models all orders simultaneously using spherical harmonics to efficiently describe the directional dependence. The method also partitions the problem to take advantage of the fact that a scattering event results in an energy loss. Then, within a parallel computing paradigm, it is assumed that the source and the attenuation map of the medium are known, and an attempt is made to solve for the distribution. This distribution can then be used in any imaging system model to approximate experimental images.

AB - The distribution of photons is described by the integrodifferential Boltzmann equation. However, this equation is difficult to solve because of the scatter integral and the size of the problem when discretized. A method is presented that models all orders simultaneously using spherical harmonics to efficiently describe the directional dependence. The method also partitions the problem to take advantage of the fact that a scattering event results in an energy loss. Then, within a parallel computing paradigm, it is assumed that the source and the attenuation map of the medium are known, and an attempt is made to solve for the distribution. This distribution can then be used in any imaging system model to approximate experimental images.

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M3 - Conference contribution

AN - SCOPUS:0032596692

SN - 0780350227

T3 - IEEE Nuclear Science Symposium and Medical Imaging Conference

SP - 1964

EP - 1968

BT - IEEE Nuclear Science Symposium and Medical Imaging Conference

PB - IEEE

T2 - Proceedings of the 1998 IEEE Nuclear Science Symposium Conference Record

Y2 - 8 November 1998 through 14 November 1998

ER -