Abstract: An apparatus for recording a 2D image of an object comprises a plurality of 1D detector units, each exposed to ionizing radiation, as transmitted through or scattered off the object, and being arranged for 1D imaging of the radiation, to which it is exposed. The detector units are distributed in an array such that the 1D images of the radiation from the detector units are distributed over a substantial portion of the 2D image. The apparatus includes a device for moving the detector units relative the object while the detector units repeatedly detect to create the 2D image of the object; and a control device for controlling the detector units to detect ionizing radiation during a short period of time before or during an initial part of the movement; calculating an optimum exposure time for the repeated detection based on the short period of time detection; and controlling the repeated detection to automatically obtain the optimum exposure time.

Abstract: A scanning-based radiation detector arrangement for two-dimensional imaging of an object comprises a plurality of one-dimensional detector units, each comprising an entrance slit, through which ionizing radiation as transmitted through the object is entered, and being arranged for one-dimensional imaging of the ionizing radiation, wherein the detector units are arranged in an array on a support with their respective entrance slits being parallel with each other and facing the source of the ionizing radiation. The detector arrangement further includes a rotating device for rotating the detector unit array in a plane perpendicular to the direction of the ionizing radiation, while the detector units are arranged to repeatedly detect, hence creating a series of two-dimensional images of the object.

Abstract: An apparatus for recording a 2D image of an object comprises a plurality of 1D detector units, each exposed to ionizing radiation, as transmitted through or scattered off the object, and being arranged for 1D imaging of the radiation, to which it is exposed. The detector units are distributed in an array such that the 1D images of the radiation from the detector units are distributed over a substantial portion of the 2D image. The apparatus includes a device for moving the detector units relative the object while the detector units repeatedly detect to create the 2D image of the object; and a control device for controlling the detector units to detect ionizing radiation during a short period of time before or during an initial part of the movement; calculating an optimum exposure time for the repeated detection based on the short period of time detection; and controlling the repeated detection to automatically obtain the optimum exposure time.

Abstract: An apparatus for recording a 2D image of an object comprises a plurality of 1D detector units, each exposed to ionizing radiation, as transmitted through or scattered off the object, and being arranged for 1D imaging of the radiation, to which it is exposed. The detector units are distributed in an array such that the 1D images of the radiation from the detector units are distributed over a substantial portion of the 2D image. The apparatus includes a device for moving the detector units relative the object while the detector units repeatedly detect to create the 2D image of the object; and a control device for controlling the detector units to detect ionizing radiation during a short period of time before or during an initial part of the movement; calculating an optimum exposure time for the repeated detection based on the short period of time detection; and controlling the repeated detection to automatically obtain the optimum exposure time.

Abstract: A scanning-based radiation detector arrangement for two-dimensional imaging of an object comprises a plurality of one-dimensional detector units, each comprising an entrance slit, through which ionizing radiation as transmitted through the object is entered, and being arranged for one-dimensional imaging of the ionizing radiation, wherein the detector units are arranged in an array on a support with their respective entrance slits being parallel with each other and facing the source of the ionizing radiation. The detector arrangement further includes a rotating device for rotating the detector unit array in a plane perpendicular to the direction of the ionizing radiation, while the detector units are arranged to repeatedly detect, hence creating a series of two-dimensional images of the object.

Abstract: A digital x-ray imaging system has a digital image generator with an x-ray source for irradiating a subject with a radiation beam and a data acquisition system located to detect the radiation after its interaction with the subject, to generate an image of the subject and to emit a digital data set representing the image. A digital image processor is connected to the digital image generator to receive first and second digital data sets respectively representing images obtained at different first and second exposure levels. The processor is configured to generate a third digital data set which when reconstructed provides an enhanced contrast information digital image. The third didgital data set is formed by data extracted from each of the first and the second digital data sets selected as representing regions of different radiation absorbency of the subject, dependent on the respective first and second exposure levels.

Abstract: An X-ray exposure apparatus has an x-ray radiator having an X-ray tube provided with collimators for the limitation of a radiated X-ray beam. The x-ray radiator can be displaced translationally and/or rotated angularly for the orientation in space of the radiation beam. A digital image receiver has a number pixels, and there is no mechanical connection between the image receiver and the x-ray radiator. A sampling unit samples the signals of the image receiver in order to determine which pixels are irradiated by the radiation beam in a test exposure and dependent thereon, control signals are emitted to adjustment unit and/or to a radiator collimator displacement and/or rotation control unit, which, dependent on the control signals, adjust the collimators or the position of the x-ray radiator in relation to the image receiver, and/or move the x-ray radiator parallel to the image receiver for the optimal adjustment of the beam thereto.

Abstract: In a method for modifying at least one calculation algorithm in a biopsy system and a biopsy system operating according to the method, a phantom is placed in a specific position on an object table in a biopsy system and the phantom is irradiated with penetrating radiation from at least two angles to produce at least two images. The phantom contains markers at exact positions, and the calculation algorithm can be modified on the basis of information on the known positions of the markers and image information in the two exposures.

Abstract: An x-ray diagnostics apparatus for mammography examinations has an x-ray tube which is rotatable, via a horizontal shaft, around a bearing mounted in a stand, and having at least two cassette holders which can selectively individually be brought to an exposure position. The cassette holders are pivotable around the horizontal shaft so that when one cassette holder is situated in the exposure position, the other cassette holder is in a standby position. In order to make the apparatus relatively small and easily manipulable, the rotational axis of the horizontal shaft is disposed in approximate axial alignment with the middle of the examination subject, and the cassette holders are secured in a mount which is rotatably attached to the horizontal shaft, so that the standby position for each cassette holder is behind the x-ray tube, as seen by the examination subject.