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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | LeBlanc, J.W. Bai, X. Clinthorne, N.H. Hua, C. Meier, D. Rogers, W.L. Wehe, D.K. Weilhammer, P. Wilderman, S.J. |
| Copyright Year | 2000 |
| Description | Author affiliation: Dept. of Nucl. Eng., Michigan Univ., Ann Arbor, MI, USA (LeBlanc, J.W.) |
| Abstract | C-SPRINT is an electronically-collimated imaging system that has been built using pixelated, low-noise, position-sensitive Si as the first detector, and a NaI scintillation detector ring as the second detector. The system consists of a single 4.5/spl times/1.5/spl times/0.03 cm/sup 3/ Si pad detector module with /spl sim/2 keV energy resolution centered at the front face of a 50 cm diameter, 12 cm long sodium iodide detector annulus. System sensitivity measurements using /sup 99m/Tc show an absolute efficiency of 1.8/spl times/10/sup -7/. This value is an order of magnitude lower than predicted due to the combination of worse than expected silicon detector triggering performance, timing resolution issues, and system dead time effects. Spatial resolution measurements are within 10% of analytical predictions. Measured resolution for the /sup 99m/Tc point source is 15 mm FWHM. Images obtained were compared with measurements using a clinically-available mechanically collimated Anger camera. A resolution-variance study shows that the C-SPRINT camera performance on a per-detected photon basis is worse than the Anger camera for /sup 99m/Tc, but is similar for /sup 131/I, as predicted by theory. Gains in raw system sensitivity of a Compton camera similar in design to C-SPRINT can potentially lead to substantial improvements in noise-equivalent performance of electronically-collimated cameras over mechanical systems. |
| Starting Page | 545 |
| Ending Page | 552 |
| File Size | 970651 |
| Page Count | 8 |
| File Format | |
| ISBN | 0780356969 |
| ISSN | 10823654 |
| DOI | 10.1109/NSSMIC.1999.842544 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 1999-10-24 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Cameras Solid scintillation detectors Spatial resolution Face detection Position sensitive particle detectors Pixel Scintillation counters Energy resolution Silicon Timing |
| Content Type | Text |
| Resource Type | Article |
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