Title of article
A Pixelated Emission Detector for RadiOisotopes (PEDRO)
Author/Authors
Dimmock، نويسنده , , M.R. and Gillam، نويسنده , , J.E. and Beveridge، نويسنده , , T.E. and Brown، نويسنده , , J.M.C. and Lewis، نويسنده , , R.A. and Hall، نويسنده , , C.J.، نويسنده ,
Pages
5
From page
133
To page
137
Abstract
The Pixelated Emission Detector for RadiOisotopes (PEDRO) is a hybrid imager designed for the measurement of single photon emission from small animals. The proof-of-principle device currently under development consists of a Compton-camera situated behind a mechanical modulator. The combination of mechanical and electronic (hybrid) collimation should provide optimal detection characteristics over a broad spectral range ( 30 keV ≤ E γ ≤ 511 keV ) , through a reduction in the sensitivity-resolution trade-off, inherent in conventional mechanically collimated configurations.
aper presents GEANT4 simulation results from the PEDRO geometry operated only as a Compton camera in order to gauge its advantage when used in concert with mechanical collimation—regardless of the collimation pattern. The optimization of multiple detector spacing and resolution parameters is performed utilizing the Median Distance of Closest Approach (MDCA) and has been shown to result in an optimum distance, beyond which only a loss in sensitivity occurs.
Keywords
SPECT , PEDRO , Compton camera
Journal title
Astroparticle Physics
Record number
2023296
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