Mesh model 2D reconstruction operator for SPECT

Ricard Delgado Gonzalo; Jovan G. Brankov

doi:10.1117/12.770986

18 March 2008 Mesh model 2D reconstruction operator for SPECT

Ricard Delgado Gonzalo, Jovan G. Brankov

Proceedings Volume 6913, Medical Imaging 2008: Physics of Medical Imaging; 69132L (2008) https://doi.org/10.1117/12.770986
Event: Medical Imaging, 2008, San Diego, California, United States

Abstract

In this paper we extend our previous evaluation of 2D tomographic image reconstruction using a content-adaptive mesh model (CAMM) for emission tomography (EM). First we present a model for the projection operator calculation using a ray-tracing algorithm based on mesh modeling for image representation. The proposed calculation allows us to incorporate a non-uniform attenuation and distance-dependent spatial resolution of the imaging system. Next the proposed approach was tested using realistic simulations with the NCAT phantom and SIMIND Monte Carlo simulation of a SPECT system in which the mesh model is calculated using images from pre reconstruction by filtered-back projection. Thereby this paper establishes a necessary step for the future development of 3D reconstruction images and spatio-temporal processing using deformable mesh modeling.

Citation Download Citation

Ricard Delgado Gonzalo and Jovan G. Brankov "Mesh model 2D reconstruction operator for SPECT", Proc. SPIE 6913, Medical Imaging 2008: Physics of Medical Imaging, 69132L (18 March 2008); https://doi.org/10.1117/12.770986

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