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Abstract:
The 3Dπ PET scanner is a total-body, time-of-flight PET imaging system that uses silicon photomultipliers (SiPMs) and a xenon-doped liquid argon (LAr) scintillator. With an axial field of view of 200 cm and nine double-sided concentric SiPM rings, the system is designed for high-resolution, whole-body imaging. Xenon doping enhances LAr scintillation by accelerating light emission, suppressing long-lived components, and shifting the emission spectrum, leading to improved timing resolution and detection efficiency. Developed as a medical imaging application within the DarkSide dark matter search program, the 3Dπ simulation framework is built on Geant4 and adapted from the DarkSide software suite. I will present recently published performance results of the 3Dπ scanner based on the NEMA NU 2–2018 standards, including spatial resolution, sensitivity, image quality, count rate, and timing performance. I’ll also provide a brief outlook on the project's future directions.
About the speaker:
Dr. Azam Zabihi has been a postdoctoral researcher at AstroCeNT in Warsaw, Poland, since September 2020, specializing in detector development, particle simulations, and medical imaging. She leads the 3Dπ PET project, which focuses on a cryogenic PET scanner based on xenon-doped liquid argon and SiPMs. Her background includes neutron radiation modeling, Geant4-based simulations, and contributions to the DarkSide-20k experiment.
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Meeting ID 会议号: 93113366238
Meeting URL 会议链接:: https://zoom.us/j/93113366238?pwd=zY97SctnAzdPLThBvibMXrtEPBVrkV.1
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