| 摘要 |
<p>A method for determining parameters of a position of a gamma quantum reaction within a scintillator detector of a PET scanner wherein the signal measured in the scintillator is transformed using at least two converters into electric measurement signals, the method comprising the steps of: accessing a database (130) comprising calibration curves p(S) that define the parameters of the reaction position (p) depending on a value of a signal ratio (S); calculating, by means of a processor (120), the parameters of the reaction position (p) based on the value of the signal ratio (S) and the calibration curve p(S); wherein the signal ratio (S) is determined as a ratio of the electric measurement signals measured using at least two converters (111A, 111B; 112A, 112B) having different quantum efficiency spectra.</p> |
