@inproceedings{43d6bf7621824bd88eae21a7b3d5cb27,
title = "Computational Approach to Design a Liquid Argon time-of-flight Positron Emission Tomography (LAr-TOF-PET) Scanner Using Monte Carlo Method",
abstract = "This paper presents the design of a new Positron Emission Tomography (PET) with improved time resolution, Time-Of-Flight PET (TOF-PET). Using the time information improves image quality and reduces the radiation dose inoculated to patients. Extended Field-Of-View (FOV) total-body scanner built from low-radioactivity liquid argon (LAr) scintillator (LAr-TOF-PET) and silicon photomultipliers (SiPMs) are readout by fast cryogenic electronics. This new concept is based on the emerging technology coming from the field of direct dark matter searches for weakly interacting massive particles (WIMPs). The DarkSide Collaboration has been particularly successful in demonstrating the true power of the advancing LAr detector technology. SiPM technology has many broader applications in science and industry, most notably in medical physics, where exquisite timing resolution of SiPMs could revolutionize PET, one of the key tools in a diagnosis of cancer, allowing one to substantially improve precision and at the same time minimize adverse side-effects to the patient. We simulated this design using Geant4 toolkit while following the National Electrical Manufacturers Association's evaluation tests for performance assessment. We will present results that highlight a 200-fold increase in sensitivity, spatial resolutions comparable to commercial PET scanners and produce PET images from 15-30 second scans, faster than traditional 30-35-minute scans. Further studies will involve optimizing the layer thickness of LAr+Xe. Moreover, scintillation induced ionization electrons can produce Cherenkov radiation along with the LAr+Xe scintillation light. With the LAr+Xe scintillator and SiPMs of 3Dπ, we can use the precise TOF info of gamma rays to improve the localization of individual positron annihilations, and as one example benefit, provide low-dose PET scans for patients who may be at high risk for exposure to radiation.",
keywords = "Geant4, Liquid Argonv, SiPM, Time-Of-Flight PET, Total-Body PET",
author = "A. Zabihi and M. Wada and A. Ramirez and A. Renshaw and X. Li and C. Galbiati and Michela Lai and D. Franco and F. Gabriele",
note = "Publisher Copyright: {\textcopyright} 2021 IEEE.; 2021 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2021 ; Conference date: 16-10-2021 Through 23-10-2021",
year = "2021",
doi = "10.1109/NSS/MIC44867.2021.9875839",
language = "English (US)",
series = "2021 IEEE Nuclear Science Symposium and Medical Imaging Conference Record, NSS/MIC 2021 and 28th International Symposium on Room-Temperature Semiconductor Detectors, RTSD 2022",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
editor = "Hideki Tomita and Tatsuya Nakamura",
booktitle = "2021 IEEE Nuclear Science Symposium and Medical Imaging Conference Record, NSS/MIC 2021 and 28th International Symposium on Room-Temperature Semiconductor Detectors, RTSD 2022",
address = "United States",
}