Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1825074 | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment | 2011 | 8 Pages |
Abstract
A new signal processing method for PET application has been developed, with discrete circuit components to measure energy and timing of a gamma interaction based solely on digital timing processing without using an amplitude-to-digital convertor (ADC) or a constant fraction discriminator (CFD). A single-channel discrete component time-based readout (TBR) circuit was implemented in a PC board. Initial circuit functionality and performance evaluations have been conducted. Accuracy and linearity of signal amplitude measurement were excellent, as measured with test pulses. The measured timing accuracy from test pulses reached to less than 300Â ps, a value limited mainly by the timing jitter of the prototype electronics circuit. Both suitable energy and coincidence timing resolutions (â¼18% and â¼1.0Â ns) have been achieved with 3Ã3Ã20Â mm3 LYSO scintillator and photomultiplier tube-based detectors. With its relatively simple circuit and low cost, TBR is expected to be a suitable front-end signal readout electronics for compact PET or other radiation detectors requiring the reading of a large number of detector channels and demanding high performance for energy and timing measurement.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Instrumentation
Authors
Xishan Sun, Allan K. Lan, Chad Bircher, Zhi Deng, Yinong Liu, Yiping Shao,