A METHOD AND A SYSTEM FOR DETERMINING PARAMETERS OF REACTIONS OF GAMMA QUANTA WITHIN SCINTILLATION DETECTORS OF PET SCANNERS

摘要

A method for determining parameters of reaction of a gamma quantum within a scintillation detector of a PET scanner, wherein the signal measured by the scintillator is transformed in at least one photomultiplier into an electric measured signal. The method comprises obtaining an access to a database (130) comprising reference standard signals (W) and reaction parameters assigned to the reference standard signals (W); comparing the measured signal (S) to the reference standard signals (W) and selecting the reference standard signal (W) that best fits the measured signal (S); assigning to the measured signal (S) the reaction parameters assigned to the selected best-fitting reference standard signal (W), as parameters of the reaction of the gamma quantum within the scintillation detector (101) for the measured signal (S); wherein the measured signal (S) and the reference standard signals (W) are represented by points (P) within a generalized measurement space (Ωp) having a number of dimensions (N measurements) being equal to the total number of measurements performed for that gamma quantum.

主权项

1. A method for determining parameters of reaction of a gamma quantum within a scintillation detector of a PET scanner, wherein signal measured by a scintillator is transformed in at least one photomultiplier into an electric measured signal (S), the method comprising the steps of:
obtaining an access to a database comprising reference standard signals (W) and reaction parameters assigned to the reference standard signals (W); comparing the measured signal (S) to the reference standard signals (W) and selecting the reference standard signal (W) that best fits the measured signal (S); assigning to the measured signal (S) the reaction parameters assigned to the selected best-fitting reference standard signal (W), as parameters of the reaction of the gamma quantum within the scintillation detector for the measured signal (S); wherein the measured signal (S) and the reference standard signals (W) are represented by points (P) within a generalized measurement space (Ωp) having a number of dimensions (Nmeasurements) being equal to a total number of measurements performed for that gamma quantum.