Uniwersytet Jagiellonski

Eryk Czerwinski

Pawel Moskal

Michal Silarski

Aleksander Gajos

Daria Kaminska

Daria Kisielewska

A method for reconstructing multi-tracer metabolic and morphometric images. The method includes the steps of: (a) receiving a plurality of events from positron annihilation centers obtained during measurements conducted by TOF-PET tomography; (b) reconstructing the time coordinates and the three-dimensional spatial coordinates for the plurality of events; (c) determining a common decay plane for gamma quanta originating from the positron-electron annihilation; (d) transforming the three-dimensional spatial coordinates for the gamma quanta to a two-dimensional frame of reference of the common decay plane; (e) determining the time coordinates and the spatial coordinates of a place of the annihilation in the common decay plane; and (f) transforming the time coordinates and the spatial coordinates of the place of the annihilation in the two-dimensional frame of reference of the common decay plane to three-dimensional spatial coordinates in a detector coordinate system.

Method for reconstructing multi-tracer metabolic and morphometric images and tomography system for multi-tracer metabolic and morphometric imaging

A method for calibration of TOF-PET detectors comprising polymeric scintillator strips and photoelectric converters, wherein cosmic radiation is used as a source of radiation, the method comprising the steps of: recording times of reactions of particles of cosmic radiation with the scintillator strips (); determining spectra () of distribution of differences in the times at which pulses are recorded at ends of the scintillator strips () connected to photoelectric converters (); using the determined spectra () to determine timing synchronization constants of the photoelectric converters (), the constants being related to: delays within the electronics; speed of light propagation within the scintillator strip of the detection module; and resolution of the difference in times of the signals recorded at the ends of the module.

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Cracow, Poland

Eryk Czerwinski