Title :
A high efficiency pixelated detector for small animal PET
Author :
Nagarkar, Vivek V. ; Tipnis, Sameer V. ; Shah, Kanai ; Shestakova, Irina ; Cherry, Simon R.
Author_Institution :
Radiat. Monitoring Devices Inc., Watertown, MA, USA
Abstract :
We report on the development of a new high efficiency detector for small animal PET. The detector is based on a monolithic block of LSO pixelated using laser ablation technique. The laser processing allows pixelation with very narrow, 70 μm wide, interpixel gaps resulting in a substantially enhanced sensitivity when the detectors are operated in coincidence mode. This work presents the first results of a detector module fabricated using this approach. Preliminary imaging data at 511 keV obtained by coupling the pixelated LSO to a position sensitive photomultiplier tube (PSPMT) and a position sensitive avalanche photodiode (PSAPD) are presented.
Keywords :
avalanche photodiodes; laser ablation; photomultipliers; position sensitive particle detectors; positron emission tomography; scintillation counters; 511 keV; 70 micron; LSO pixelation; coincidence mode; detector module; high efficiency pixelated detector; interpixel gaps; laser ablation technique; laser processing; monolithic block; position sensitive avalanche photodiode; position sensitive photomultiplier tube; small animal PET; substantially enhanced sensitivity; Animals; Costs; Crystals; Detectors; High-resolution imaging; Laser ablation; Positron emission tomography; Radiation monitoring; Spatial resolution; Telephony;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2003 IEEE
Print_ISBN :
0-7803-8257-9
DOI :
10.1109/NSSMIC.2003.1352354
