초록 ▼

An imaging detector includes a collimator, a scintillator and a photodiode array. The collimator directs radiation to scintillator segments having apertures substantially matched to collimator apertures. Optical reflectors and heavy metal septa between the segments reduce light and radiation scatter

An imaging detector includes a collimator, a scintillator and a photodiode array. The collimator directs radiation to scintillator segments having apertures substantially matched to collimator apertures. Optical reflectors and heavy metal septa between the segments reduce light and radiation scatter between the segments, respectively. Photodiode array elements with active areas substantially matched to the scintillator segment apertures detect light generated when the radiation interacts with the scintillator. A cooler, a low noise photodiode array and readout electronics improve the signal-to-noise ratio of the imaging system in specific embodiments.

대표청구항 ▼

[ What is claimed is:] [1.] An imaging detector for collimating and detecting individual x-ray or gamma-ray photons, comprising:a collimator including a plurality of chambers, each chamber having an end defining an exit aperture cross section;a scintillator including a plurality of segments, each se

[ What is claimed is:] [1.] An imaging detector for collimating and detecting individual x-ray or gamma-ray photons, comprising:a collimator including a plurality of chambers, each chamber having an end defining an exit aperture cross section;a scintillator including a plurality of segments, each segment having a first end defining a first aperture cross section substantially matching one of said exit aperture cross sections and having a second end defining a second aperture cross section;a photodetector array including a plurality of elements, each element having a cross section substantially matching one of said second aperture cross sections; andan array of readout electronics channels for amplification and processing of electrical signals produced by said photodetector array, each channel being coupled for communication with a respective one of said photodetector array elements.