6533b7d4fe1ef96bd1263288
RESEARCH PRODUCT
High performance detector head for PET and PET/MR with continuous crystals and SiPMs
Carlos LacastaJohn BarrioGabriela LlosaA. EtxebesteMagdalena RafecasMagdalena RafecasCarles SolazV. StankovaJorge CabelloC. De La TailleJosep F. OliverA. Del GuerraP. BarrillonMaria Giuseppina BisogniJohn E. Gillamsubject
Nuclear and High Energy Physicsmedicine.medical_specialtySiPMIterative reconstruction01 natural sciencesParticle detectorLyso-030218 nuclear medicine & medical imaging03 medical and health sciences0302 clinical medicineOpticsSilicon photomultiplier0103 physical sciencesmedicineMedical physicsHigh resolution[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 determinationSemiconductor detectorFull width at half maximumMG-APDPETMonolithic crystalsbusinessdescription
International audience; A high resolution PET detector head for small animal PET applications has been developed. The detector is composed of a 12 mm x 12 mm source continuous LYSO crystal coupled to a 64-channel monolithic SiPM matrix from FBK-irst. Crystal thicknesses of 5 mm and 10 mm have been tested, both yielding an intrinsic spatial resolution around 0.7 mm FWHM with a position determination algorithm that can also provide depth-of-interaction information. The detectors have been tested in a rotating system that makes it possible to acquire tomographic data and reconstruct images of 22Na sources. An image reconstruction method specifically adapted for continuous crystals has been employed. The Full Width at Half Maximum measured from a point source reconstructed with ML-EM was 0.7 mm with the 5 mm crystal and 0.8 mm with the 10 mm crystal.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2012-05-01 |