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Device and method for digitizing gamma ray energy and characterizing peak time and decay time constant without the use of ADC
Device and method for digitizing gamma ray energy and characterizing peak time and decay time constant without the use of ADC
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机译:在不使用ADC的情况下数字化伽马射线能量并表征峰值时间和衰减时间常数的装置和方法
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摘要
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.
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