Radiant energy – Invisible radiant energy responsive electric signalling – With or including a luminophor
Reexamination Certificate
2005-04-19
2005-04-19
Gaglairdi, Albert (Department: 2878)
Radiant energy
Invisible radiant energy responsive electric signalling
With or including a luminophor
C250S366000, C250S370090
Reexamination Certificate
active
06881959
ABSTRACT:
Method and system for generating an image of the radiation density of a source of photons located in an object wherein Compton scattering and non-Compton scattering events are detected and contained within data used for image reconstruction. The system includes a multiple pinhole collimator, a position sensitive scintillation detector as used in standard Gamma cameras, and a silicon pad detector array inserted between the collimator and the scintillation detector. The problem of multiplexing, normally associated with multiple pinhole systems, is reduced by using the extra information from the detected Compton scattering events. For properly selected pinhole spacing, this leads to a significantly improved image quality. A valuable enhancement can be achieved when adding only a small fraction of gamma rays with reduced angular ambiguity. The system does not require a highly optimized Compton camera behind the collimator.
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Clinthorne Neal H.
Meng Ling Jian
Rogers W. Leslie
Wehe David K.
Brooks & Kushman P.C.
Gaglairdi Albert
The Regents of the University of Michigan
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