Traceable point-like 68Ge/68Ga source with a spherically symmetric positron absorber for PET scanners
| Autor: | Takahiro Yamada, Hiroki Miyatake, Hidetake Ishizu, Mio Okamoto, Tomoyuki Hasegawa, Kei Kikuchi, Takahiro Mikamoto, Yasushi Sato, Yusuke Inoue |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Physics
Scanner Radiation Photon medicine.diagnostic_test business.industry Physics::Medical Physics Monte Carlo method Physical Therapy Sports Therapy and Rehabilitation General Medicine 030218 nuclear medicine & medical imaging 03 medical and health sciences 0302 clinical medicine Optics Positron Positron emission tomography 030220 oncology & carcinogenesis Pet scanner medicine Calibration Radiology Nuclear Medicine and imaging Point (geometry) business |
| Zdroj: | Radiological Physics and Technology. 13:170-176 |
| ISSN: | 1865-0341 1865-0333 |
| Popis: | A novel traceable point-like 68Ge/68Ga source was developed for calibration of positron emission tomography (PET) scanners. The source was equipped with a spherically symmetric acrylic positron absorber. The physical characteristics of photons emitted from the point-like source were evaluated by Monte Carlo simulation, considering possible geometrical uncertainties. The calibration factor of a clinical PET/CT scanner was evaluated using four manufactured point-like sources as a practical application of the point-like source. The results were consistent with that determined by the conventional cross-calibration method. The traceable point-like 68Ge/68Ga source is expected to be a simple and practical tool for determining the calibration factor and evaluating the physical characteristics of PET scanners. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink