Abstract
Small-animal nuclear imaging applications require both good spatial resolution and good sensitivity. The use of a detector with outstanding spatial resolution allows high-resolution pinhole imaging to be done with only modest magnification. Consequently, multi-pinhole imaging can be done with significantly reduced multiplexing compared to what would be encountered at an equivalent spatial resolution using a conventional scintillator-based system. We present tomographic images obtained with our prototype silicon imaging system. The silicon detector is a double-sided strip detector of 300 micrometer thickness and 50 micrometer strip pitch with an active area of 28mm × 63mm. The imaging aperture is a multiple-pinhole collimator made from molybdenum. This system is suitable for imaging the low-energy emissions (27-35 keV) from the decay of iodine-125. We present plans for a next-generation silicon-based imaging system that will significantly improve the sensitivity.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 2999-3002 |
| Number of pages | 4 |
| Journal | IEEE Nuclear Science Symposium Conference Record |
| Volume | 5 |
| State | Published - 2004 |
| Event | 2004 Nuclear Science Symposium, Medical Imaging Conference, Symposium on Nuclear Power Systems and the 14th International Workshop on Room Temperature Semiconductor X- and Gamma- Ray Detectors - Rome, Italy Duration: Oct 16 2004 → Oct 22 2004 |
ASJC Scopus subject areas
- Radiation
- Nuclear and High Energy Physics
- Radiology Nuclear Medicine and imaging