Abstract: A direct conversion radiation detector includes a detector body made from a direct conversion material, a plurality of segmented electrode members operatively coupled to a radiation-receiving side of the detector body and at least one electrode operatively coupled to a second side of the detector body. The radiation detector is configured such that received radiation is incident on the segmented electrode members. The radiation detector provides reduced polarization effects for a variety of high flux radiation detection applications.

Abstract: An x-ray tube assembly includes an x-ray tube envelope, a cathode assembly and a transmission anode assembly. The transmission anode assembly includes an x-ray generation layer and an anode substrate. The x-ray generation layer may be annular and mounted on a rotating disc-shaped anode substrate or cylindrical and mounted on a rotating and/or oscillating cylindrical anode substrate.

Abstract: A multi-modality imaging system that can be utilized in the volume computed tomography (VCT) mode, the single photon emission computed tomography (SPECT) mode and the positron emission tomography (PET) mode is disclosed. In the VCT mode of operation, three (3) x-ray sources and associated detectors can be utilized. In the SPECT and PET modes of operation, the gamma radiation is provided by an isotope ingested by the patient and is detected by the detectors angularly spaced around the patient. A fused imaging analysis and computer aided diagnosis system is provided and processes the images produced by the multi-modality imaging system. The fused images are analyzed and the fused image data are compared with disease process models to provide feedback to the patient and medical professionals in the form of four dimensional displays and interactive image visualizations.