本發明係揭示一種用於高解析度正子發射斷層掃瞄(positron emission tomography, PET)系統中將閃爍攝影機及資料搜集系統之放射事件數位化的裝置及其使用方法。該裝置包含一個其包括數個放大器與比較器之閃爍事件數位轉化器、二個類比數位轉換器(ADC)及一個用來解析放射事件數位化資料的分析機。該方法包含比較放射事件所產生之數個類比電壓脈衝與一參考既定之能量標準制定之參考電壓，將所有訊號經兩組係數擴大，將該兩組擴大後之訊號加總，將加總後所得之訊號數值化，及分析該經數值化之總和以決定相當於多數放射事件之數值。A device and method used in the high resolution Positron Emission Tomography (PET) systems for digitizing radiation events for a scintillation camera and a data acquisition system. The device comprises a scintillation digitizer, including a plurality of comparators and amplifiers, two ADCs, and an analyzer for resolving the digital values of radiation events. The method comprises comparing a plurality of analog electric pulses generated upon radiation event detections with a reference voltage corresponding to an energy level of interest, amplifying all of the signals with two groups of coefficients, summing the two groups of amplified signals, digitizing the summed signals, and analyzing the digitized sums to determine digital values corresponding to a plurality of the radiation events.
