Abstract
Purpose Since the 1990s, PET has been successfully combined with MR or CT systems. In the past years, especially PET systems have seen a trend towards an enlarged axial field of view (FOV), up to a factor of ten. Methods Conducting a thorough literature research, we summarize the status quo of contemporary total-body (TB) PET/CT scanners and give an outlook on possible future developments. Results Currently, three human TB PET/CT systems have been developed: The PennPET Explorer, the uExplorer, and the Biograph Vision Quadra realize aFOVs between 1 and 2 m and show a tremendous increase in system sensitivity related to their longer gantries. Conclusion The increased system sensitivity paves the way for short-term, low-dose, and dynamic TB imaging as well as new examination methods in almost all areas of imaging.
Original language | English |
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Pages (from-to) | 445-459 |
Number of pages | 15 |
Journal | European Journal of Nuclear Medicine and Molecular Imaging |
Volume | 49 |
Issue number | 2 |
Early online date | 14 Oct 2021 |
DOIs | |
Publication status | Published - Jan 2022 |
Keywords
- PET
- CT
- MRI
- Total-body
- Sensitivity
- Long axial FOV
- MONOLITHIC SCINTILLATOR CRYSTALS
- HIGH QUANTUM EFFICIENCY
- PERFORMANCE EVALUATION
- SILICON PHOTOMULTIPLIERS
- PHOTO-DETECTORS
- SYSTEM
- PET/MRI
- SIPM
- ALGORITHMS
- READOUT