RISE: A method for 3D Reconstruction of SPECT Images - Validation with a Hardware Phantom

摘要

The ”Reconstructed Image from Simulations Ensemble” (RISE) has been recently demonstrated as an alternative method for tomographic image (2D) reconstruction in emission tomography, comparing favourably to the well-established techniques such as the MLEM and ART. Utilizing Monte-Carlo techniques, the method simulates an ensemble of image-solutions, each one corresponding to a different realization of the activity distribution. In this work, we present the extension of RISE to a 3D reconstruction method directly providing the volumetric image of the activity distribution. The reconstruction capabilities of the method are demonstrated with projection data acquired in an experimental study from a hardware phantom. Reconstruction results are presented and compared to those of MLEM.