Novel Circuit Design for a 3D Position Sensitive Scintillation TOF-PET Detector that Achieves ~100 ps CTR
- Resource Type
- Conference
- Authors
- Pourashraf, Shirin; Zhao, Zhixiang; Innes, Derek; Gonzalez-Montoro, Andrea; Cates, Joshua W.; Levin, Craig S.
- Source
- 2022 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC) Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2022 IEEE. :1-3 Nov, 2022
- Subject
- Components, Circuits, Devices and Systems
Computing and Processing
Engineered Materials, Dielectrics and Plasmas
Nuclear Engineering
Photonics and Electrooptics
Signal Processing and Analysis
Three-dimensional displays
Sensitivity
Crystals
Detectors
Circuit synthesis
Biomedical imaging
- Language
- ISSN
- 2577-0829
We have built a scalable mixed-signal readout circuit for a 3D position sensitive PET detector that achieves ~100 ps FWHM CTR. For this work we used individual 3×3×3 mm 3 and 3×3×10 mm 3 LGSO crystals, as well as 2×4 arrays of 3×3×10 mm 3 crystals side-coupled to arrays of 3.16×3.16 mm 2 SiPMs. The preliminary results verify that the CPLD is able to resolve 3D interaction positions along the array with < 3 mm positioning resolution along the length of each 10 mm long crystal element. We also present the readout strategy to compensate the CPLD digital noise that otherwise reduces the sensitivity and CTR performance. With this novel strategy we achieved nearly %100 sensitivity recovery as well as ~11 ps improved CTR.