QUICK EVALUATION OF SCATTERING DURING RECONSTRUCTION BY POSITRON EMISSION TOMOGRAPHY

摘要

1. An image processing device comprising: a scattering simulation processor (68) that processes measurable synograms generated from imaging data obtained for a subject of imaging by a visualization device (30) to obtain a scattering synogram that characterizes the shape of the scattering contribution; processor (72 ) scattering scaling, which uses Monte Carlo simulations to determine the scattering fraction, and scales the scattering synogram in order to generate m the scaled scattering synogram, which coincides with the contribution of scattering on the measured synogram; a reconstruction processor (74) that reconstructs the imaging data into an image representation using a scaled scatter synogram for scatter correction. 2. The image processing device according to claim 1, in which the scattering scattering processor (72) simulates the photon events using the Monte Carlo method according to the initial distribution of the sources and paths of the simulated photon events through an attenuation map in order to determine the scattered photon events, and determines the ratio of the total number simulated photon scattering events to the total number of simulated photon events, the ratio being the scattering fraction. 3. The image processing device according to claim 1, in which the reconstruction processor (74) initially reconstructs the visualization data into an initial distribution of sources using an attenuation map, while the scattering scattering processor (72) is configured to: a) use simulation of