  Crystal arrays made of LSO and LuAP crystals 2x2x10 mm pixels were
manufactured for evaluation of detector with depth-of-interaction (DOI)
determination capability intended for small animal positron emission tomograph.
Position-sensitive LSO/LuAP phoswich DOI detector based on crystal 8x8 arrays
and HAMAMATSU R5900-00-M64 position-sensitive multi-anode photomultiplier tube
was developed and evaluated. Time resolution was found to be not worse than 1.0
ns FWHM for both layers, and spatial resolution mean value was 1.5 mm FWHM for
the center of field-of-view.
