本發明係揭示一種用於供數位化伽瑪射線能量及特徵化高峰期與衰退期時間常數之高解析正子發射斷層掃瞄(PET)系統的裝置及其使用方法,其將於一次PET事件偵測時所產生之電壓脈衝塑造呈一種於快速線性上升後接著較緩慢指數型衰退的邊緣。該表現模式包含有關正子發射斷層掃瞄事件偵測之電壓脈衝參數,包括從電壓脈衝之時間間距測量所測定得之衰退常數、高峰電壓値,及高峰期。該等時間間距測量係使用在一種示範性電子建置中的比較測定器與計數器完成。A device and method used in high resolution positron emission tomography (PET) systems for digitizing gamma ray energy and characterizing peak time and decay time constant, models a voltage pulse generated upon a PET event detection as a fast linearly rising edge followed by a slower exponential decay. The model includes parameters of the voltage pulse that are relevant for PET event detection including a decay constant, a peak voltage value, and a peak time, which are determined from time interval measurements of the voltage pulse. The time interval measurements are made using comparators and counters in an exemplary electronic implementation.
