SPECT/CT registration with the DCC and MC simulations for SPECT imaging

Author

Chatelain, Florent ; Desbat, Laurent ; Moreira, Jean François ; Amblard, Cécile ; Breton, Vincent

Author_Institution

Fac. de Medecine, UMR CNRS, La Tronche, France

Volume

6

fYear

2004

fDate

16-22 Oct. 2004

Firstpage

3551

Abstract

We want to perform the attenuation correction in the case of 3D attenuated ray transform with a parallel geometry. We suppose that the attenuation function is available but not registered with the data. We use the sum on each slice of the 2D data consistency conditions of the attenuated Radon transform to register the attenuation function with the data. We then correct for the attenuation using the Novikov formula. We show numerical experiments indicating the feasibility of the approach and propose a scheme including the diffusion correction for the registration of CT to SPECT for SPECT imaging improvement.

Keywords

Monte Carlo methods; Radon transforms; data integrity; image registration; medical image processing; single photon emission computed tomography; 2D data consistency conditions; CT registration; Monte Carlo simulations; Novikov formula; SPECT image registration; SPECT reconstruction; analytic inversion formula; attenuated Radon transform; attenuation correction; diffusion correction; Attenuation; Computed tomography; Detectors; Geometry; Image reconstruction; Linear predictive coding; Monte Carlo methods; Scattering; Yield estimation;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record, 2004 IEEE

ISSN

1082-3654

Print_ISBN

0-7803-8700-7

Electronic_ISBN

1082-3654

Type

conf

DOI

10.1109/NSSMIC.2004.1466652

Filename

1466652