Abstract: A computer tomography (CT) scanner may be retrofitted or redesigned to integrally include an analog X-ray detector which allows the CT scanner to be used to provide both high spatial resolution analog projection radiographs and high contrast resolution CT images. A cassette carrier having a curved slot defined therein is provided for placement on or in the moveable tabletop of the CT scanner. The patient is then placed upon or above the cassette carrier. A flexible cassette is then disposed within the curved cassette and assumes the radius of curvature defined by the slot. The radius of curvature is chosen such that the film cassette is focused on a collimated X-ray source within the CT scanner. The curved cassette includes or may be combined with a flexible X-ray grid placed proximate to adjacent the X-ray film. The film cassette includes a phosphor plate and photosensitive film plate held in immediate contact with phosphor plate by which the analog projection radiograph is recorded.

Abstract: A multilayer x-ray reflector or reflectors are used with a source of radiation for narrow bandwidth or dual energy radiographic imaging applications. In one aspect, a unique multilayer design permits two distinct x-ray energies of narrow bandwidth to be reflected at the same incident angle for use in dual energy applications. In another aspect, several multilayer reflectors are employed in a slit scanning system. In yet another aspect, an elongated radiation source and a multilayer x-ray reflecting structure are combined to provide an x-ray or gamma ray source.

Abstract: A multilayer x-ray reflector or reflectors are used with a source of radiation for narrow bandwidth or dual energy radiographic imaging applications. In one aspect, a unique multilayer design permits two distinct x-ray energies of narrow bandwith to be reflected at the same incident angle for use in dual energy applications. In another aspect, several multilayer reflectors are employed in a slit scanning system. In yet another aspect, an elongated radiation source and a multilayer x-ray reflecting structure are combined to provide an x-ray or gamma ray source.

Abstract: A scanning system for use in radiology incorporates two disks bearing identically patterned, radial arrays of apertures and corresponding X-ray detection materials, respectively. The disks are axially aligned and synchronously rotated on opposite sides of the radiological target. X-rays emitted adjacent to the first disk are strobed by the apertures and detected by photodiode arrays on the second disk after passing through said target. The detection array is scanned to produce the X-ray information for digital processing and imaging. The foregoing apparatus may be portable and mounted for retrofitting relative to existing X-ray installations.

Abstract: An apparatus for efficient X-ray conversion. A phosphorescent crystal element which is sensitive to X-radiation, is coated with a reflective substance on all its faces except one. X-rays impinging upon a single element, or on an array of said elements in which the uncoated faces contiguously form an emitting surface, cause the phosphorescence to be internally reflected by the coating and to be emitted from only the uncoated face, where it can be used to activate a photodetector.