6533b7d0fe1ef96bd125a206
RESEARCH PRODUCT
A Demonstrator for a new Axial PET Concept
K. HonscheidFrancesca Nessi-tedaldiIan JohnsonR. De LeoC. JoramH. KaganNeal H. ClinthorneSteinar StapnesFranco MeddiD. SchinzelP. SoleviDieter RenkerC. CasellaThomas SchneiderJosep F. OliverCarlos LacastaAndré BraemE. ChesiGünther DissertoriFelicitas PaussMagdalena RafecasS. SmithJacques SéguinotI. VilardiP. WeilhammerE. NappiS.s. HuhA. RudgeE. BolleEric W. CochranL. DjambazovWerner Lustermannsubject
PhysicsInterleavingInteraction pointPhysics::Instrumentation and Detectorsbusiness.industry3D reconstructionIterative reconstructionSTRIPSlaw.inventionCrystalOpticslawSensitivity (control systems)businessImage resolutiondescription
In PET imaging, improving sensitivity while maintaining very good spatial resolution is crucial. To achieve this goal, we propose a novel concept of PET scanner, with axially arranged crystals, providing a high sensitivity and a 3D reconstruction of the gamma interaction point. The trans-axial coordinate is given by the crystal hit, while the z coordinate is reconstructed by the weighted distribution of light escaping the crystal and entering into an array of Wave Length Shifting (WLS) strips interleaving the crystal layers. This novel configuration allows full identification of Compton interactions in the crystals that can be included in image reconstruction thus enhancing the sensitivity. We present preliminary results obtained by a small prototype consisting of 4×4 crystals with orthogonally interleaved WLS strips. Experimental data are compared to simulated data.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2008-10-01 | 2008 IEEE Nuclear Science Symposium Conference Record |