Speaker
Description
Positron emission tomography (PET) is an advanced clinical examination imaging technology in the field of nuclear medicine. We will describe a novel PET module using a soft-core analog-to-digital converter (ADC) based on time-to-digital converter (TDC). The soft-core ADC is implemented in an FPGA. In the hardware design, the FPGA-based ADC (FPGA-ADC) only requires one resistor and an FPGA. FPGA-ADC allows users to program the sampling rate and adjust the dynamic range of the ADC with small modifications. This design is characterized by flexibility and high density, which can greatly reduce the size of readout circuits for the PET module.
In this PET module, detector will use a 15×15 (the size of crystal bar: 1.535 mm ×1.535mm ×20 mm) LYSO crystal array coupled with an 8×8 SiPM (J-series, from ON Semiconductor) array. The FPGA-ADC serves as the main part of the data acquisition (DAQ) system. For coincidence timing measurement, one reference detector is used in our experiment and to remove the background noise of LYSO crystal. It is possible for the FPGA-ADC to perform full waveform sampling on the raw signal of PET module. Good position and energy resolution can be achieved using the FPGA-ADC for the PET module.
| Minioral | Yes |
|---|---|
| IEEE Member | No |
| Are you a student? | Yes |
