[21p-A602-1~11] 2.4 Medical application

1:00 PM - 1:15 PM JST(4:00 AM - 4:15 AM UTC)

[21p-A602-1] [The 29th Ionization Radiation Division Encouragement Award Speech] Quantum PET: Demonstration of Positronium Lifetime Imaging

〇Sodai Takyu¹, Kengo Shibuya², Ken-ichiro Matsumoto¹, Fumihiko Nishikido¹, Hideaki Tashima¹, Miwako Takahashi¹, Taiga Yamaya¹ (1.QST, 2.The Univ. of Tokyo)

Keywords:

Positron emission tomography,Quantum PET,Positron lifetime measurement

Positronium (Ps) lifetime, which is formed before positron-electron annihilation, is expected to be a new biomarker to measure radiation resistance and malignancy of tumors. In this study, as a first step to realize the Ps lifetime imaging concept, "quantum PET," we performed an imaging experiment of the Ps lifetime. Two thin-film ²²Na sources, each of which was individually sandwiched between two types of standard materials with known Ps lifetimes, were measured with a pair of PET detectors, and the certified values of the Ps lifetimes were successfully imaged.