Refine
Year of publication
- 2006 (75) (remove)
Institute
- Fachbereich Medizintechnik und Technomathematik (75) (remove)
Document Type
- Conference Proceeding (34)
- Article (32)
- Book (4)
- Lecture (3)
- Part of a Book (1)
- Other (1)
Keywords
- Biosensor (23)
- Technische Mechanik (3)
- Bauingenieurwesen (2)
- CAD (2)
- biosensor (2)
- civil engineering (2)
- 3-nitrofluoranthene (1)
- BTEX compounds (1)
- Biosensorik (1)
- Bruchmechanik (1)
Development of an optimized LSO/LuYAP phoswich detector head for the Lausanne ClearPET demonstrator
(2006)
This paper describes the LSO/LuYAP phoswich detector head developed for the ClearPET small animal PET scanner demonstrator that is under construction in Lausanne within the Crystal Clear Collaboration. The detector head consists of a dual layer of 8×8 LSO and LuYAP crystal arrays coupled to a multi-anode photomultiplier tube (Hamamatsu R7600-M64). Equalistion of the LSO/LuYAP light collection is obtained through partial attenuation of the LSO scintillation light using a thin aluminum deposit of 20-35 nm on LSO and appropriate temperature regulation of the phoswich head between 30°C to 60°C. At 511keV, typical FWHM energy resolutions of the pixels of a phoswich head amounts to (28±2)% for LSO and (25±2)% for LuYAP. The LSO versus LuYAP crystal identification efficiency is better than 98%. Six detector modules have been mounted on a rotating gantry. Axial and tangential spatial resolutions were measured up to 4 cm from the scanner axis and compared to Monte Carlo simulations using GATE. FWHM spatial resolution ranges from 1.3 mm on axis to 2.6 mm at 4 cm from the axis.