论文信息 - A fast projector/backprojector pair modeling the nonstationary scatter response function for scatter compensation in SPECT imaging

A fast projector/backprojector pair modeling the nonstationary scatter response function for scatter compensation in SPECT imaging

The authors present a novel fast algorithm for implementing SDSE (slab derived scattered estimation) that reduces computation time by a factor of 16 compared to a direct implementation. Projection data computed with the new algorithm compare well with that from Monte Carlo simulations. When combined with faster computers and iterative reconstruction algorithms that converge rapidly, this fast projector/backprojector pair makes iterative-reconstruction-based scatter compensation feasible.<<ETX>>

Eric C. Frey | Benjamin M. W. Tsui | Z.-W. Ju

[1] C E Floyd,et al. Monte Carlo evaluation of Compton scatter subtraction in single photon emission computed tomography. , 1985, Medical physics.

[2] E. Frey,et al. A practical method for incorporating scatter in a projector-backprojector for accurate scatter compensation in SPECT , 1993 .

[3] Eric C. Frey,et al. A comparison of scatter compensation methods in SPECT: subtraction-based techniques versus iterative reconstruction with accurate modeling of the scatter response , 1992, IEEE Conference on Nuclear Science Symposium and Medical Imaging.

[4] M. Ljungberg,et al. A Monte Carlo program for the simulation of scintillation camera characteristics. , 1989, Computer methods and programs in biomedicine.

[5] G.T. Gullberg,et al. Frequency domain implementation of the three-dimensional geometric point response correction in SPECT imaging , 1991, Conference Record of the 1991 IEEE Nuclear Science Symposium and Medical Imaging Conference.

[6] B.M.W. Tsui,et al. A practical projector-backprojector modeling attenuation, detector response, and scatter for accurate scatter compensation in SPECT , 1991, Conference Record of the 1991 IEEE Nuclear Science Symposium and Medical Imaging Conference.