Abstract: A detector includes a scintillator, a light guide, at least one photomultiplier, and a shield for the at least one photomultiplier. The at least one photomultiplier may be supported by a non-magnetic material. The shield includes a magnetic shield in front of the scintillator and a magnetic shield enclosing the at least one photomultiplier.

Abstract: A method and device for producing nuclear images of an object under investigation which emits nuclear radiation, wherein the object is scanned along a scan axis by means of a radiation detector having a radiation detector field of view. The radiation detector field of view is masked by means of a mask field of view which partially exceeds the radiation detector field of view along the scan axis. The loss of sensitivity perpendicular to the scan axis in the parts of the mask field of view which exceed the radiation detector field of view is compensated by applying a weighting function proportional to the inverse of the incremental area along the scan axis bounded by the radiation detector field of view.

Abstract: A method and apparatus for the dynamic modification of the spatial distortion correction capabilities of a scintillation camera having spatial distortion correction apparatus. The spatial distortion correction apparatus includes a memory having stored therein spatial distortion correction factors in a predetermined addressable format. During the on-line use of the scintillation camera, the spatial distortion correction apparatus transforms the image event coordinate position data from the scintillation camera in accordance with the stored distortion correction factors to provide corrected image event coordinate repositioning data. The spatial distortion correction modification apparatus and method provides modification of the corrected image event coordinate data in accordance with the respective energy levels of the image events to provide accurate spatial distortion correction characteristics for the actual energy levels of the image events.

Abstract: A scintillation camera is suspended from an elevated gantry and is laterally movable. Sensors detecting the lateral position of the scintillation camera detector head produce signals which are combined with the detector head output signals to produce an image reflecting the occurrence of radioactive events within an expanded rectilinear field of view of the detector head. This image is stored using a recording medium.