Abstract: A multidirectional motor system for transmitting motion to a moveable element in at least two directions that are not collinear comprising a first motor that transmits motion to the moveable element along a direction determined by the orientation of the first motor and a second motor operable to change the orientation of said first motor.

Abstract: A gamma camera (70), comprising: at least one emission detector (72), which receives radiation emitted from the body of a subject (26) and generates signals responsive thereto; a radiation source (74), which directs radiation toward the body; at least one transmission detector (76), having a long dimension, which receives radiation transmitted through the body (26) from the radiation source (74) and generates signals responsive thereto, wherein the transmission detector (76) translates in a direction generally perpendicular to the long dimension.

Abstract: A method of differentiating between OSA and CSA comprising: determining if chest motion above a chest motion threshold is present; determining if tracheal breath sound above a breath sounds threshold are present, classifying a state as OSA if the chest motion is above the threshold and the sounds are below the threshold; and classifying a state as CSA if both the chest motion and sounds are below their respective thresholds.

Abstract: A method of reducing artifacts caused by generation of unwanted photons by scattering (e.g., Compton scattered photons) in which a detected event is spatially convoluted with a spatial filter function. The filter function has a distribution of weights within the filter function that is dependent on the energy of the event for a same primary event energy.

Abstract: A scintillator, having two faces, for use in medical diagnostic imaging devices, said devices including a plurality of light sensors for converting light generated in said scintillators to electrical signals, processors for converting the electrical signals to images and a monitor for displaying the images, said scintillator including a two dimensional distribution of intrinsic light controllers, said controllers changing the light distribution among the sensors to achieve a desired distribution wherein the light controllers focus the light such that the spread of light to detectors is reduced.

Abstract: Apparatus from removing excess liquid from a surface containing a liquid toner image comprising: a source of gas which flows gas onto the surface; and a chamber, adjacent the source and the surface which receives a mixture of air and liquid carried by the air and removes the mixture from the surface substantially without contaminating the surroundings, wherein the surface is an intermediate transfer member which receives images from a first surface and from which the images are transferred to a further surface.

Abstract: A method for determining a time for acquiring contrast-enhanced images from a CT scanner of a subject into whom a contrast medium has been injected, the method including: identifying a region of interest in an initial CT image of the body of a subject; defining an attenuation data segment corresponding to the region of interest by reprojecting the region of interest in the initial image; receiving attenuation data within the segment from a subsequent scan of the patient; and independently processing the attenuation data received within the segment to estimate an optimal time for performing a diagnostic scan of the body, without reconstructing all or a portion of the CT image.

Abstract: Apparatus for the measurement of position of an object in a given direction, comprising: a one-dimensional array of light detectors, comprising a plurality of detectors including at least three detectors, each of which produces a signal at a given position in response to light reaching the detector; at least one edge between a dark and a light area viewed by at least one of the plurality of the detectors, which the at least one edge moves, in relation to the plurality of detectors, as the object moves in the given directions; and computing circuitry which receives signals from the at least one detector viewing the at least one edge and determines the position responsive to the signals produced by the at least one detector at the given position.

Abstract: An optical image shutter is provided having a multiplicity of thin layers of alternating narrow and wide gap semiconductor material stacked to form an MQW structure and electrodes located on at least two semiconductor surfaces of the image shutter, wherein the electrodes are configured so that a voltage difference applied between them produces an electric field that is temporally and spatially substantially uniform in the volume of the MQW structure and wherein the aperture of the image shutter is greater than 4 square mm.

Abstract: A method for determining the relative motion of a surface with respect to a measurement device comprising: illuminating the surface from a source with incident illumination, such that illumination is reflected from portions of the surface toward a detector; spatially filtering the reflected illumination such that the phase of the detected optical illumination from a given scatterer on the surface is substantially constant or linearly related to the translation of the surface; generating a signal by the detector responsive to the illumination incident on the detector; and determining the relative motion of the surface from the signal.

Abstract: An optoelectronic shutter for radiation, comprising an input plate and an output plate, comprising material substantially transparent to the radiation, each plate having an outer and an inner surface, wherein a recess is formed in the inner surface of at least one of the plates, and wherein respective non-recessed portions of the inner surfaces of the plates are bonded together, and the recess defines a vacuum chamber enclosed by the two plates; a photocathode fixed to the inner surface of the input plate, adjacent the chamber, and a photo-emissive anode, fixed to the inner surface of the output plate, adjacent the chamber and opposite the photocathode.

Abstract: A method for reconstructing images of a subject in a variable-angle helical-scan CT scanner including an X-ray tube, a detector array, and a bed, the method comprising: angling the translation axis and the rotation axis at an acute angle relative to one another; rotating the X-ray tube about the rotation axis while translating the bed along the translation axis through a plane of rotation of the tube, whereby the X-ray tube describes a helical path relative to the subject; acquiring first and second views of the subject at the same effective rotational angle about the axis of rotation, said views comprising X-ray attenuation data received from elements of the array; producing a planar corrected image slice by interpolation of the data in different views, wherein the data is generated by non-corresponding elements in the different views; and repeating the above steps at respective positions at a plurality of rotational angles of the X-ray tube.

Abstract: A viewing apparatus for transparencies or the like masks any faceplate areas not covered by images by generating masks, and adapts the luminance level of the image under study and of other faceplate areas to the optimal viewing conditions required by the observer.

Abstract: A method of transparency viewing, including: placing a transparency at a viewing surface, forming a light pattern and projecting the light pattern to back-illuminate the transparency. Preferably, the light pattern is formed by spatially modulating a beam of light using a plurality of light valves.

Abstract: Oral hygiene apparatus for destroying sensitized oral bacteria, comprising: an incoherent light source; and a light directing member, adapted for directing light from light source and onto at least part of a surface of at least one tooth within an oral cavity.

Abstract: A viewing apparatus (11) for transparencies or the like masks any display areas (20) not covered by transparencies (505-508) by generating masks without moving parts, and adapts the luminance level of the image under study and of other display areas to the optimal viewing conditions required by the observer.

Abstract: A photoreceptor for mounting on a drum comprising: a photoreceptor sheet comprising a backing layer, a conductive layer and a photoconductive layer; and an underlayer comprising a layer of cloth.

Abstract: Apparatus for producing high repetition rate optical pulses, including: a beam generator that produces an initial pulsed light beam having an initial pulse repetition rate; a pulse repetition rate multiplier, which receives the initial pulsed light beam and produces at least one pulsed light beam having a higher pulse repetition rate than the initial rate.

Abstract: A viewing device for viewing transparencies comprising a display surface; a source of backlighting that backlights the display surface with linearly polarization axis; member for holding a transparency on the display surface;an optical sensor positioned so that it views the display surface; and polarizer, having a polarizer axis, and suituated between the display surface and the optical sensor. The viewing device is configured such that the polarizer axis is functionallu related to the polarization axis of the polarized light; and the polarized is smaller than the display surface.

Abstract: A method of analyzing breath sounds produced by a respiratory system, the method comprising: measuring breath sounds produced by the respiratory system; tentatively identifying a signal as being caused by a breath sound of a given type if it meets a first criteria characteristic of the breath sound of the given type; and confirming said identification if a tentatively identified signal meets a second criteria characteristic of the breath sound of the given type.