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 :
RMD Inc., Watertown, MA, USA
fDate :
6/1/2004 12:00:00 AM
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, inter-pixel gaps resulting in a substantially enhanced sensitivity when the detectors are operated in coincidence mode. This paper 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; medical image processing; photomultipliers; position sensitive particle detectors; positron emission tomography; semiconductor counters; solid scintillation detectors; 511 keV; coincidence mode; detector module fabrication; high efficiency pixelated detector; imaging data; interpixel gaps; laser ablation technique; laser processing; lutetium oxyorthosilicate; monolithic block; pixelation; position sensitive avalanche photodiode; position sensitive photomultiplier tube; positron emission tomography; small animal PET; Animals; Costs; Crystals; Detectors; High-resolution imaging; Laser ablation; Positron emission tomography; Rough surfaces; Spatial resolution; Surface roughness; LSO; Lutetium oxyorthosilicate; PET; positron emission tomography; scintillators; small animal imaging;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.2004.829750
