An analog decoding BGO block detector using circular photomultipliers
Journal Article
·
· IEEE Transactions on Nuclear Science
- Univ. of Texas, Houston, TX (United States). MD Anderson Cancer Center
This is a positron camera detector design study using quadrant sharing of circular phototubes and optically cross-coupled BGO scintillation crystals. The goal is to design a very high spatial resolution detector using the larger and less expensive circular phototubes, so that the high production cost of high spatial resolution, multi-slice positron cameras may be lowered. Theoretical calculations and experimental studies have been performed using 19mm diameter phototubes. The study shows that (a) BGO detector-pitch in the range of 2.2 x 2.2mm to 3.0 x 3.0 mm (transaxial x axial) can be decoded with these 19 mm diameter phototubes, and (b) it is possible to achieve very uniform signal pulse-height for all the BGO crystals in the block with this design, even though there are relatively large air-gaps between circular phototubes. This study shows that very high spatial resolution, approaching the theoretical resolution of PET imaging, can be achieved using the cheaper 19mm circular phototubes.
- OSTI ID:
- 148054
- Report Number(s):
- CONF-941061--
- Journal Information:
- IEEE Transactions on Nuclear Science, Journal Name: IEEE Transactions on Nuclear Science Journal Issue: 4Pt1 Vol. 42; ISSN 0018-9499; ISSN IETNAE
- Country of Publication:
- United States
- Language:
- English
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