FIELD: physics.
SUBSTANCE: invention relates to an improved reconstruction algorithm for visualisation processes. The PET system includes an improved image reconstruction algorithm based on an improved modelling of the point-spread function. PET time-of-flight data are used to obtain a mean emitting point and a time-of-flight probability function. Said information is then used to model the point-spread function. The time-of-flight probability function and the detector response function are used to determine a probability volume for a given line of response, which is then used in the reconstruction of the image.
EFFECT: higher resolution power and overall image quality.
20 cl, 4 dwg
