Abstract
This paper presents the design and initial experimental results of a gamma camera using a coded aperture with clustered non-redundant array pattern. This system is based on the use of 5" position sensitive photomultiplier tube coupled to pixelated BGO array with 2×2×10mm3 pixels. The PSPMT is readout by the IDEAS VA-MCR system with a costume made front electronic. This gamma camera was designed for imaging gamma rays with a broad energy range. The collimator plate was made of Tungsten of 8mm thick for reducing the effect of gamma ray penetration. For imaging source objects with a relatively large angular extent and high background, the use of clustered NRA offers great flexibility in aperture design that provides a wide view angle and a controlled data multiplexing. In order to replace the time consuming Monte Carlo simulations, we also presented an analytical method for calculating performance indices, such as pixel-wise signal-to-noise ratio and resolution/variance tradeoffs achievable with different detector designs. This helps to select an approximate aperture for given imaging tasks.
Original language | English (US) |
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Article number | N26-73 |
Pages (from-to) | 763-766 |
Number of pages | 4 |
Journal | IEEE Nuclear Science Symposium Conference Record |
Volume | 2 |
DOIs | |
State | Published - 2003 |
Externally published | Yes |
Event | 2003 IEEE Nuclear Science Symposium Conference Record - Nuclear Science Symposium, Medical Imaging Conference - Portland, OR, United States Duration: Oct 19 2003 → Oct 25 2003 |
Keywords
- Clustered non-redundant array
- Coded aperture
ASJC Scopus subject areas
- Radiation
- Nuclear and High Energy Physics
- Radiology Nuclear Medicine and imaging