image reconstruction method to reconstruct the image by correcting the response depth information included in the observed data using the flight time information of the positron emission tomography

摘要

The present invention estimates the positron distribution using flight time (TOF, Time-Of-Flight) information to accurately estimate the depth of reaction (DOI, Depth-Of-Interaction) of the incident, and the estimated positron distribution Calculates the conditional probability that a accident event has been observed at each reaction depth (DOI, Depth-Of-Interaction), and uses the calculated conditional probability to obtain information about the response depth (DOI, Depth-Of-Interaction) of the incident event. One correction relates to the method. In addition, rearranged by using the corrected depth of response (DOI, Depth-Of-Interaction) information, using a sinogram (Sinogram), or a response line (LOR, Line-Of-Response) type histogram (Histogram) vector It relates to a method of reconstructing an improved image using projection and back projection in a model.