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Sökning: AMNE:(MEDICIN OCH HÄLSOVETENSKAP Klinisk medicin Radiologi och bildbehandling) > Patent

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1.
  • Bakowski Holtryd, Mietek, et al. (författare)
  • X-ray sensor, method for constructing an x-ray sensor and an x-ray imaging system comprising such an x-ray sensor
  • 2020
  • Patent (populärvet., debatt m.m.)abstract
    • An X-ray sensor (1) having an active detector region including a plurality of detector diodes (2) arranged on a surface region (3) of the X-ray sensor (1), a junction termination (4) surrounding the surface area (3) including the plurality of detector diodes (2), the junction termination (4) including a guard (5) arranged closest to the end of the surface region (3), a field stop (6) arranged outside the guard (2) and a number N of field limiting rings, FLRs (7) arranged between the guard (5) and the field stop (6), wherein each of the FLRs (7) are placed at positions selected so that distances between different FLRs (7) and between the guard and the first FLR lie within an effective area, the effective area being bounded by the lines α=(10+1.3×(n−1)) μm and β=(5+1.05×(n−1)) μm.
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2.
  • Bakowski Holtryd, Mietek, et al. (författare)
  • X-ray sensor, x-ray detector system and x-ray imaging system
  • 2018
  • Patent (populärvet., debatt m.m.)abstract
    • Disclosed is an x-ray sensor having an active detector region including a plurality of detector diodes at a first side of the sensor, and with placement of the junction termination at a second opposite side of the sensor. Normally, this implies that the junction termination is moved from the top side where the active detector area is located to the bottom side of the sensor, allowing for full utilization of the active detector area at the top side with detector diodes to the very edge of the sensor.  
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3.
  • Bakowski Holtryd, Mietek, et al. (författare)
  • X-ray sensor, x-ray detector system and x-ray imaging system
  • 2019
  • Patent (populärvet., debatt m.m.)abstract
    • There is provided an x-ray sensor (21) comprising an active detector region including a plurality of detector diodes (22) at a first side of the sensor, and a common junction termination (23) at a second opposite side of the sensor. Normally, this implies that the junction termination (23) is moved from the top side where the active detector area is located to the bottom side of the sensor, allowing for full utilization of the active detector area at the top side with detector diodes to the very edge of the sensor.  
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4.
  • Borga, Magnus, et al. (författare)
  • Improvement in Magnetic Resonance Imaging Relating to Correction of Chemical Shift Artifact and Intensity Inhomogeneity
  • 2011
  • Patent (populärvet., debatt m.m.)abstract
    • Present invention discloses systems and methods for improvement of magnetic resonance images. Correction of a chemical shift artefact in an image acquired from a magnetic resonance imaging system is obtained by a system and a method involving iterative - compensation for the misregistration effect in an image domain. Correction of an intensity inhomogeneity in such images is obtained by a system and a method involving locating voxels corresponding to pure adipose tissue and estimating correction field from these points.
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5.
  • Bornefalk, Hans, et al. (författare)
  • Image quality in photon counting-mode detector systems
  • 2013
  • Patent (populärvet., debatt m.m.)abstract
    • The current invention applies to photon counting silicon x-ray detectors with energy discriminating capabilities and applications in x-ray imaging systems. The overall image quality produced by such a system is improved by the presented novel methods for optimally using the energy information in Compton events and making selective use of counts induced from charges collected in neighboring pixels. The pile-up problem during high-flux imaging regimes is reduced by a novel method for signal reset, which improves the count efficiency by reducing the risk of losing event due to signal pile-up in the read out electronics chain.
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6.
  • Danielsson, Mats, Professor, et al. (författare)
  • Detector for x-ray imaging
  • 2019
  • Patent (populärvet., debatt m.m.)abstract
    • Disclosed is an edge-on photon counting detector and a method for manufacturing a charge collecting side of such detector. The edge-on photon counting detector comprises a semi-conducting substrate. The semi-conducting substrate comprises, a first end adapted to face an x-ray source and a second end opposite the first end in the direction of incoming x-rays, and at least one strip having N depth segments, N≥2, each of the depth segments comprising a charge collecting metal electrode and a charge collecting side comprising doped regions and insulating regions, wherein each of the charge collecting metal electrodes is arranged over a corresponding doped region and is connected to a respective routing trace arranged on the insulating regions, the respective routing trace being adapted to conduct signals from the charge collecting metal electrode to a read-out pad E, connectable to front-end electronics, arranged at the second end.  
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9.
  • Danielsson, Mats, Professor (författare)
  • Device and method related to X-ray imaging
  • 2007
  • Patent (populärvet., debatt m.m.)abstract
    • The present invention relates to an arrangement for detecting X-ray radiations comprising a carrying member on one face arranged with detectors consisting of a plurality of sensors arranged on a substrate. The detectors are arranged substantially edge to edge at lease in one row on at least one side of said carrying member.  
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  • Resultat 1-10 av 35

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