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Multi-voltage threshold (MVT) is an amplitude-based sampling method. It takes timing samples when the event pulse crosses the user-defined thresholds. Only a few comparators and TDCs are required when implementing such digitizer. Previously, we have demonstrated an FPGA-only MVT digitizer based on this method. The FPGA-only MVT digitizer employs the differential I/Os in an FPGA as the required comparators...
We are developing, at the Huazhong University of Science and Technology, a small-animal positron emission tomograph (PET) scanner that has two new features. Firstly, it uses detector modules that are based on a new digital readout electronics previously investigated and reported by us. Secondly, it can arrange the detector modules into various scanner geometries for different imaging needs. In this...
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