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A CCD-based detector for SPECT

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8 Author(s)
Nagarkar, V.V. ; Radiat. Monitoring Devices (RMD), Inc, Watertown, MA, USA ; Shestakova, I. ; Gaysinskiy, Valeriy ; Tipnis, S.V.
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We are investigating the use of a CCD for high-resolution radionuclide imaging. The use of a CCD has the potential to provide very high spatial resolution on the order of 200 to 400 μm, while significantly simplifying the readout electronics. The detector is based on a special CCD with on-chip multiplication gain that allows high-speed operation while maintaining the read noise at a very low level of <1 electron. To achieve high detection efficiency and excellent spatial resolution for incident gamma flux, a specially fabricated thick microcolumnar CsI(Tl) scintillator was optically coupled to the CCD. A prototype SPECT imaging system was assembled by incorporating pinhole/parallel hole collimators in the design. The use of this system for radionuclide imaging has been demonstrated through tomographic imaging of a test phantom filled with 99mTc.

Published in:

Nuclear Science, IEEE Transactions on  (Volume:53 ,  Issue: 1 )

Date of Publication:

Feb. 2006

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