AUTOMATED CRYSTAL IDENTIFICATION ACHIEVED VIA MODIFIABLE TEMPLATES Russian patent published in 2016 - IPC G06T1/00 

FIELD: physics.

SUBSTANCE: invention relates to a nuclear imaging system. A nuclear imaging system includes a crystal identification system which receives a flood image that includes a plurality of peaks, each peak responsive to radiation detected by a corresponding scintillator crystal. Crystal identification processor partitions flood image into a plurality of regions, each region being masked to correspond to one of an array of nuclear detectors. Model image is generated in which at least one Gaussian model represents identified peaks. Misidentified peaks in model image in which locations of peaks in flood image differ from corresponding scintillator crystal are determined and locations of misidentified peaks in flood image are corrected. Calibration processor corrects geometric distortions in acquired projection data according to corrected peaks.

EFFECT: improvement of image reconstruction accuracy.

15 cl, 8 dwg