Abstract: A nuclear medicine diagnostic imaging system wherein the gamma camera rotates about the patient and is coupled to receive electrical power, control signals and to transmit data using cableless coupling means. This enables the system to provide whole body helical scans. Reconstruction begins during the first revolution of the camera about the patient and continues during subsequent revolutions to provide evolving images.

Abstract: A CT scanner using a rotate-rotate mode wherein the detector is designed to simultaneously detect X-rays that have traversed multiple-planar sections in a patient being scanned.

Abstract: Systems and methods are presented for decreasing the processing time of spectral artifact reduction systems that use reprojection data for post reconstruction corrections. The systems and methods essentially reduce the data processed for the reprojection step to reduce the normally relatively long time period required by reprojectors. The time savings have no detrimental effect on image resolution. Thus, better quality pictures are obtained in shorter time periods.

Abstract: A slice orientation selection arrangement for magnetic resonance imaging in planes oblique to the normal cartesian coordinates. The coordinates are rotated to applying gradient signals using Euler computations.

Abstract: A method for the correction of ring artifacts in images obtained by rotate-rotate computerized tomography (CT) scanners includes the step of reconstructing an original image, which comprises a real image and a ring artifact image. The ring artifact image is determined by edge enhancing the original image and dividing the edge enhanced original image into rings or annuli with the annuli being concentric around the axis of rotation. The average intensity is determined for each concentric annulus. This average value of each annulus is substracted from pixels of the original image belonging to that annulus to provide a ring artifact free image.

Abstract: An apparatus for examining a body by means of penetrating radiation. The apparatus has a source of penetrating radiation for transmitting radiation through a body, and a detector array disposed to detect the radiation after passage through the body. Radiation beams emitted by the source traverse a plurality of paths through the body and are detected by the detector. The source has at least two distinct point sources for emitting radiation. The distinct point sources of radiation alternately emit radiation. The detector array can be a reduced array of detectors which subtends less than the full reconstruction circle diameter. A method is provided for increasing the spatial resolution in a CT scanner by increasing the sampling density by interleaving radiation beams emitted by the radiation source between adjacent radiation beams continuously as the source and detectors are rotated about the body.