245 ps-TOF brain-dedicated PET prototype with a hemispherical detector arrangement
Eiji Yoshida, Hideaki Tashima, Go Akamatsu, Yuma Iwao, M. Takahashi, Taichi Yamashita, Taiga Yamaya
Abstract
was individually coupled to a separate MPPC. Singles list-mode data from each detector were stored, and coincidences were identified using a coincidence-detection software algorithm. The CRT of 245 ps was finally achieved as the system average after a fine timing correction. For image reconstruction, we implemented the list-mode TOF-OSEM. For a small rod phantom, rods of 3 mm diameter were clearly separated. Also, images of the 3D Hoffman brain phantom, which demonstrated clear contrast between gray and white matter, supported the effect of TOF information.
Topics & Concepts
DetectorCoincidenceOpticsPhysicsLyso-LutetiumComputer scienceMaterials scienceNuclear medicineMedical physicsScintillatorMedicineMetallurgyPathologyOxideYttriumAlternative medicineMedical Imaging Techniques and ApplicationsAtomic and Subatomic Physics ResearchRadiation Detection and Scintillator Technologies