Details

Autor(en) / Beteiligte

• Mosset, J.-B.
• Devroede, O.
• Krieguer, M.
• Rey, M.
• Vieira, J.-M.
• Jung, J.H.
• Kuntner, C.
• Streun, M.
• Ziemons, K.
• Auffray, E.
• Sempere-Roldan, P.
• Lecoq, P.
• Bruyndonckx, P.
• Loude, J.-F.
• Tavernier, S.
• Morel, C.

Titel

Development of an optimized LSO/LuYAP phoswich detector head for the Lausanne ClearPET demonstrator

Ist Teil von

• IEEE transactions on nuclear science, 2006-02, Vol.53 (1), p.25-29

Ort / Verlag

New York: IEEE

Erscheinungsjahr

2006

Quelle

IEEE/IET Electronic Library (IEL)

Beschreibungen/Notizen

• 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/spl times/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/spl deg/C to 60/spl deg/C. At 511keV, typical FWHM energy resolutions of the pixels of a phoswich head amounts to (28/spl plusmn/2)% for LSO and (25/spl plusmn/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.