Abstract: A novel compound having exponential temperature dependent electrical resistivity comprises an electrically insulating bulk material (11), electrically conductive particles (12) of a first kind, and electrically conductive particles (13) of a second kind covered by a lubricant. The bulk material holds the particles of the first and second kinds in place therein; the particles of the second kind are smaller than the particles of the first kind; the particles of the second kind are more in number than the particles of the first kind; and the particles of the second kind have higher surface roughness than the particles of the first kind, wherein the particles of the second kind comprise tips (13a) and the particles of the first kind comprise even surface portions (12a).

Abstract: An arrangement for measuring temperature comprises a temperature sensor (11) including a main section (12) and separated electrical terminals (13, 14), wherein the main section (12) has an accentuated temperature dependent electrical resistivity and the electrical terminals are electrically connected to the main section (12); and an arrangement (15) for measuring an electrical resistance configured to measure the electrical resistance over the electrical terminals (13, 14), wherein the measured electrical resistance is indicative of the temperature of an object in thermal contact with the main section. The main section (12) may have an electrical resistivity as a function of temperature within a specified temperature interval, such as e.g. ?100 to +100 degrees Celsius, such that the temperature derivative of the electrical resistivity within the specified temperature interval is strictly increasing.

Abstract: A novel compound having exponential temperature dependent electrical resistivity comprises an electrically insulating bulk material (11), electrically conductive particles (12) of a first kind, and electrically conductive particles (13) of a second kind covered by a lubricant. The bulk material holds the particles of the first and second kinds in place therein; the particles of the second kind are smaller than the particles of the first kind; the particles of the second kind are more in number than the particles of the first kind; and the particles of the second kind have higher surface roughness than the particles of the first kind, wherein the particles of the second kind comprise tips (13a) and the particles of the first kind comprise even surface portions (12a).

Abstract: An apparatus for recording radiation image data of an object comprises a radiation source arrangement (3)provided for emitting radiation; an object holder (5) arranged in the radiation path of the emitted radiation and provided for housing the object during the recordation of the radiation image data; a detector arrangement (6) for detecting radiation which has interacted with the object; a support structure (2), to which the radiation source and detector arrangements are secured; and a scanning device (1) provided for moving either one of the support structure or the object holder with respect to the other one of the support structure or the object holder in a conical pendulum movement while the detector arrangement is provided for detecting radiation which has interacted with the object.

Abstract: A method for creating, displaying, and analyzing X-ray images of a plurality of objects is disclosed. The method comprising, for each of the objects recording three-dimensional X-ray image data of the object in a single measurement; creating a three-dimensional X-ray image of the object from the three-dimensional X-ray image data; creating one or two two-dimensional X-ray images of the object from the three-dimensional X-ray image data; displaying the one or two two-dimensional X-ray images of the object; and analyzing the one or two two-dimensional X-ray images of the object. For a subset of the plurality of objects the three-dimensional X-ray image of the object is displayed, wherein the subset of the plurality of objects is determined based on the step of, for each of the objects, analyzing the one or two two-dimensional X-ray images of the object.

Abstract: An apparatus for recording radiation image data of an object comprises a radiation source arrangement (3) provided for emitting radiation; an object holder (5) arranged in the radiation path of the emitted radiation and provided for housing the object during the recordation of the radiation image data; a detector arrangement (6) for detecting radiation which has interacted with the object; a support structure (2), to which the radiation source and detector arrangements are secured; and a scanning device (1) provided for moving either one of the support structure or the object holder with respect to the other one of the support structure or the object holder in a conical pendulum movement while the detector arrangement is provided for detecting radiation which has interacted with the object.

Abstract: The invention relates to an imaging arrangement for imaging an object. The imaging arrangement comprises: an X-ray source 5; an X-ray detector 6 arranged to receive X-rays transmitted through the object from the X-ray source 5, wherein the X-ray detector 6 comprises a gaseous-based edge-on direction sensitive line detector provided with an electron avalanche amplifier, and wherein the line detector is adapted to record a line image of radiation as transmitted through the object; and a support device 8 to which the X-ray source 5 and the X-ray detector 6 are attached so as to be arranged on opposite sides of the object, and wherein the support device 8 is arranged to rotate around the object and is also arranged to be movable in relation to the object. The invention also relates to a system comprising such imaging arrangement.

Abstract: The invention relates to an imaging arrangement 1 for obtaining imaging data of an object 7. The imaging arrangement 1 comprises a support structure 3 having an axis of rotation 9 and comprising means 10 for rotating the support structure 3; a pair of first and second radiation modules 2a, 2b fixedly arranged on the support structure 3 along a radius perpendicular to the axis of rotation 9, wherein each of the radiation modules 2a, 2b comprises a radiation source 6a, 6b simultaneously emitting radiation; a radiation detector 4 for detecting radiation as emitted from the radiation modules 2a, 2b and passed through the object 7 being imaged; and a collimator 14 arranged between, as seen in a direction parallel to the axis of rotation 9, the pair of radiation modules 2a, 2b and the radiation detector 4. The invention also relates to a corresponding method.

Abstract: An apparatus for recording radiation image data of an object comprises a radiation source arrangement provided for emitting radiation; an object holder arranged in the radiation path of the emitted radiation and provided for housing the object during the recordation of the radiation image data; a detector arrangement for detecting radiation which has interacted with the object; a support structure, to which the radiation source and detector arrangements are secured; and a scanning device provided for moving either one of the support structure or the object holder with respect to the other one of the support structure or the object holder in a conical pendulum movement while the detector arrangement is provided for detecting radiation which has interacted with the object.

Abstract: A method for creating, displaying, and analyzing X-ray images of a plurality of objects is disclosed. The method comprising, for each of the objects recording three-dimensional X-ray image data of the object in a single measurement; creating a three-dimensional X-ray image of the object from the three-dimensional X-ray image data; creating one or two two-dimensional X-ray images of the object from the three-dimensional X-ray image data; displaying the one or two two-dimensional X-ray images of the object; and analyzing the one or two two-dimensional X-ray images of the object. For a subset of the plurality of objects the three-dimensional X-ray image of the object is displayed, wherein the subset of the plurality of objects is determined based on the step of, for each of the objects, analyzing the one or two two-dimensional X-ray images of the object.

Abstract: The invention relates to an imaging arrangement for imaging an object. The imaging arrangement comprises: an X-ray source 5; an X-ray detector 6 arranged to receive X-rays transmitted through the object from the X-ray source 5, wherein the X-ray detector 6 comprises a gaseous-based edge-on direction sensitive line detector provided with an electron avalanche amplifier, and wherein the line detector is adapted to record a line image of radiation as transmitted through the object; and a support device 8 to which the X-ray source 5 and the X-ray detector 6 are attached so as to be arranged on opposite sides of the object, and wherein the support device 8 is arranged to rotate around the object and is also arranged to be movable in relation to the object. The invention also relates to a system comprising such imaging arrangement.

Abstract: A dual-source scanning-based radiation detecting apparatus comprises at least two radiation sources provided for emitting ionizing radiation of optionally different energies, direction sensitive line detectors arranged in an array, and a device for scanning the line detectors across an object to be examined. The line detectors are alternately pointing towards different ones of the radiation sources. The device for scanning is arranged for keeping the line detectors aligned during scanning to enable each of the line detectors to record multiple line images of the object. The scanning is preferably performed at least a distance corresponding to N times the distance between two adjacent ones of the line detectors, where N is the number of the radiation sources, to thereby enable recording of line images sufficient to form a two-dimensional image of the object at each of the different energies.

Abstract: An apparatus for creating tomosynthesis and projection images of an object from tomosynthesis image data obtained in a single measurement comprising an X-ray apparatus provided for obtaining the tomosynthesis image data of the object in a single measurement, a device provided for creating a three-dimensional tomosynthesis image of the object from the tomosynthesis image data, and a device provided for creating a two-dimensional projection image of the object from the three-dimensional tomosynthesis image by means of projecting the three-dimensional tomosynthesis image on a plane.

Abstract: The invention relates to a detector arrangement 1 for imaging an object. The detector arrangement 1 comprises a support device 4, an X-ray source 3 and an X-ray detection device 2 attached to the support device 4 on opposite sides of the object 8. The X-ray detection device 2 is arranged to detect radiation transmitted by the X-ray source 3 for producing an X-ray image. The detector arrangement 1 further comprises an ultrasonography device 9 for sending ultrasound pulses into the object 8 and for receiving reflections of the pulses for producing an ultrasonographic image. The ultrasonography device 9 is attached to the support device 4. The X-ray detection device 2 and the ultrasonography device 9 are arranged to image the object 8 in a single scanning movement.

Abstract: The invention relates to an imaging arrangement 1 for obtaining imaging data of an object 7. The imaging arrangement 1 comprises a support structure 3 having an axis of rotation 9 and comprising means 10 for rotating the support structure 3; a pair of first and second radiation modules 2a, 2b fixedly arranged on the support structure 3 along a radius perpendicular to the axis of rotation 9, wherein each of the radiation modules 2a, 2b comprises a radiation source 6a, 6b simultaneously emitting radiation; a radiation detector 4 for detecting radiation as emitted from the radiation modules 2a, 2b and passed through the object 7 being imaged; and a collimator 14 arranged between, as seen in a direction parallel to the axis of rotation 9, the pair of radiation modules 2a, 2b and the radiation detector 4. The invention also relates to a corresponding method.

Abstract: A dual-source scanning-based radiation detecting apparatus comprises at least two radiation sources provided for emitting ionizing radiation of optionally different energies, direction sensitive line detectors arranged in an array, and a device for scanning the line detectors across an object to be examined. The line detectors are alternately pointing towards different ones of the radiation sources. The device for scanning is arranged for keeping the line detectors aligned during scanning to enable each of the line detectors to record multiple line images of the object. The scanning is preferably performed at least a distance corresponding to N times the distance between two adjacent ones of the line detectors, where N is the number of the radiation sources, to thereby enable recording of line images sufficient to form a two-dimensional image of the object at each of the different energies.

Abstract: A radiation detector for imaging a sheet-shaped beam (11) of ionizing radiation comprises an electron multiplication chamber (12) filled with a medium for electron multiplication; and a solid multichannel structure (14) arranged in the path of the sheet-shaped beam within the chamber, wherein the structure liberates electrons (16a) in response to being exposed to the radiation. An electron detecting means (17d) is provided for detecting the electrons spatially resolved to thereby image the sheet-shaped beam. The structure (14) is of a scintillating material, so that said the structure emits scintillating light in response to being exposed to the radiation; and detecting means (19–20) are provided for detecting scintillating light (18) emitted from the structure.

Abstract: A scanning-based apparatus for obtaining tomosynthesis data of an object performing a periodic movement comprises a radiation source emitting radiation around an axis of symmetry; a radiation detector comprising line detectors, each being directed towards the divergent radiation source to allow a ray bundle of the radiation that propagates in a different angle to enter the line detector after having been transmitted through the object, and to be detected repeatedly therein; and a movement device provided for moving the radiation source and the radiation detector relative to the object linearly in a path orthogonal to the symmetry axis, and a distance which is sufficient for scanning each of the line detectors across the entire object. The movement device is provided to repeat the movement a plurality of times, each time with a different phase shift relative to the periodic movement of the object.

Abstract: A scanning-based arrangement for obtaining imaging data of an object at high repetition rate comprises a support structure; scanning-based apparatuses fixedly arranged on the support structure and each including (i) a radiation source, and (ii) a radiation detector comprising a stack of line detectors, each being directed towards the radiation source to allow a ray bundle of radiation to enter the line detector; an object table arranged in the radiation path of one of the scanning-based apparatuses; and a device provided for rotating the support structure relative the object table so that the object table will successively be arranged in the radiation path of each of the scanning-based apparatuses, during which rotation each of the line detectors in each of the radiation detectors is adapted to record a plurality of line images of radiation as transmitted through the object.

Abstract: The invention is related to a detector assembly for detecting vapours, smoke and flames, comprising a detector unit 1 having a UV sensitive photocathode 3, an anode 5, a voltage supply unit 9 connected to the UV sensitive photocathode 3 and to the anode 5 to create an electric field such that photoelectrons emitted from the UV sensitive photocathode 3, when struck by UV light, are forced to move towards the anode 5, and a readout arrangement for detecting charges induced by electrons moving towards the anode 5 thereby generating a signal related to the intensity of detected UV light. The detector assembly further comprises an artificial source 21 for emitting radiation having wavelengths within a wavelength interval, the source 21 being oriented such that UV light from the source 21 can strike the UV sensitive photocathode 3. The wavelength interval coincides with a transmission band of air, and with an absorption band of vapours containing molecules of a complex structure.