6533b85bfe1ef96bd12bb44c
RESEARCH PRODUCT
High resolution detectors based on continuous crystals and SiPMs for small animal PET
Magdalena RafecasMagdalena RafecasJohn BarrioCarles SolazH. SaikoukGabriela LlosaA. Del GuerraJorge CabelloP. BarrillonC. De La TailleP. SoleviMaria Giuseppina BisogniCarlos Lacastasubject
Nuclear and High Energy PhysicsPhysics::Instrumentation and DetectorsSiPMMonte Carlo methodHigh resolution01 natural sciencesCoincidence030218 nuclear medicine & medical imaging03 medical and health sciences0302 clinical medicineOpticsSilicon photomultiplierPosition (vector)0103 physical sciencesHigh resolutionSensitivity (control systems)[PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det][SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/MicroelectronicsInstrumentationImage resolutionPhysics010308 nuclear & particles physicsbusiness.industryDetectorPosition determinationPETMonolithic crystalsbusinessdescription
International audience; Sensitivity and spatial resolution are the two main factors to maximize in emission imaging. The improvement of one factor deteriorates the other with pixelated crystals. In this work we combine SiPM matrices with monolithic crystals, using an accurate γ-ray interaction position determination algorithm that provides depth of interaction. Continuous crystals provide higher sensitivity than pixelated crystals, while an accurate interaction position determination does not degrade the spatial resolution. Monte Carlo simulations and experimental data show good agreement both demonstrating sub-millimetre intrinsic spatial resolution. A system consisting in two rotating detectors in coincidence is currently under operation already producing tomographic images.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2012-05-20 |