Abstract: A table assembly may include a tabletop member having a lateral sidewall and a longitudinal sidewall. A cover may be pivotally connected to the tabletop member about a cover pivot. The cover may be configured to move from a closed position to a display position and may include a cover cavity having an interior wall. An adjustable length arm may include a first arm portion and a second arm portion. The first arm portion may be pivotally connected to the lateral sidewall of the tabletop member. The second arm portion may be pivotally connected to the interior wall of the cover. The cover may be configured to receive the tabletop member in the cover cavity when the cover is in the closed position. The cover pivot may be located nearer the longitudinal sidewall of the tabletop member than the first arm end portion.

Abstract: When employing specular reflective material in a scintillator crystal array, light trapping in the crystal due to repetitive internal reflection is mitigated by roughening at least one side (16) of each of a plurality of pre-formed polished scintillator crystals. A specular reflector material (30) is applied (deposited, wrapped around, etc.) to the roughened crystals, which are arranged in an array. Each crystal array is coupled to a silicon photodetector (32) to form a detector array, which can be mounted in a detector for a functional scanner or the like.

Abstract: When employing specular reflective material in a scintillator crystal array, light trapping in the crystal due to repetitive internal reflection is mitigated by roughening at least one side (16) of each of a plurality of pre-formed polished scintillator crystals. A specular reflector material (30) is applied (deposited, wrapped around, etc.) to the roughened crystals, which are arranged in an array. Each crystal array is coupled to a silicon photodetector (32) to form a detector array, which can be mounted in a detector for a functional scanner or the like.

Abstract: A scintillator (18) includes radioactive elements which emit radiation of a characteristic energy, such as lutetium176, which emits 202 keV and 307 keV ?-rays. The scintillators have light output levels that vary and photomultiplier tubes that respond to the light scintillations tend to drift. When a scanner (10) is not generating diagnostic images, the photomultiplier tubes detect scintillations from the lutetium 176 radiation. A self-calibration processor (40) adjusts the gain for each photomultiplier tube such that its output peak corresponds to 202 keV or 307 keV and adjusts a scaling factor for PMT outputs corresponding to each scintillator such that the output peaks have a common amplitude.

Abstract: A scintillator (18) includes radioactive elements which emit radiation of a characteristic energy, such as lutetium176, which emits 202 keV and 307 keV ?-rays. The scintillators have light output levels that vary and photomultiplier tubes that respond to the light scintillations tend to drift. When a scanner (10) is not generating diagnostic images, the photomultiplier tubes detect scintillations from the lutetium 176 radiation. A self-calibration processor (40) adjusts the gain for each photomultiplier tube such that its output peak corresponds to 202 keV or 307 keV and adjusts a scaling factor for PMT outputs corresponding to each scintillator such that the output peaks have a common amplitude.

Abstract: A system, method, and computer program product for reducing processing time related to relative geometry calculations performed for objects in a simulated three-dimensional environment. The method converts three-dimensional location coordinates of each object of a plurality of simulated objects in the simulated three-dimensional environment to coordinates of a two-dimensional grid. Then, a two-dimensional grid area that is associated with the scan of an object is calculated. Objects with two-dimensional grid coordinates that are collocated with the calculated area of the scan are determined and relative geometry calculations for the scan of the object determined to be collocated with the calculated area of the scan is performed.

Abstract: A method of locating an event with a gamma camera (12) of an emission computed tomography (ECT) scanner (10) is provided. The gamma camera (12) includes a matrix of sensors (22) situated to view the event. The sensors (22) have respective outputs that are responsive to the event. The method includes: identifying a first sensor in the matrix that has in response to the event a highest output relative to the other sensors in the matrix (step (B2)); identifying a number of second sensors in the matrix that are closest neighbors to the first sensor (step (B3)); combining into a total output a number of outputs from the identified sensors, the number of outputs being at least one (1) and less than the number of all the identified sensors (step (B4)); and, determining a threshold value which is a percentage of the total output (step (B4)).

Abstract: This disclosure relates to a vehicle tire which is provided with light reflective elements. These light reflective elements are so situated on the tire that they give certain, predetermined optical effects when the tire is being operated in certain speed ranges. These effects give the observer a clear optical warning that a vehicle is present and, moreover, an indication of the speed of the vehicle.