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公开(公告)号：US10460899B2
公开(公告)日：2019-10-29
申请号：US15516936
申请日：2015-09-30
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Rolf Karl Otto Behling , Ewald Roessl
Abstract: The invention relates to a modification arrangement for an X-ray generating device, a modification method, a computer program element for controlling such device and a computer readable medium having stored such computer program element. The modification arrangement comprises a cathode, an anode (2) and modification means, e.g. a modification device. The cathode is configured to provide an electron beam (15). The anode (2) is configured to rotate under impact of the electron beam (15) and is segmented by slits (21) arranged around the anode's circumference. The modification means are configured to modify the electron beam (15) when the electron beam (15) is hitting one of the anode's rotating slits (21).
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公开(公告)号：US09870892B2
公开(公告)日：2018-01-16
申请号：US14360425
申请日：2012-10-24
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Rolf Karl Otto Behling
CPC classification number: H01J35/10 , H01J2235/086
Abstract: In order to provide an increased, i.e. faster, periodic modulation of X-ray intensity, an anode disk (28) for a rotating anode in an X-ray tube includes a circumferential target area (34) with a target surface area (36), a focal track center line (38), and a beam-dump surface area (40). The target surface area when hit by an electron beam generates X-rays. The beam-dump surface area when hit by an electron beam generates no useful X-rays Target portions and beam-dump portions are arranged alternatingly along the focal track center line. A focal spot is centered on the focal track center line. Structures on both sides of the focal track center line are arranged such that same radiation intensities are provided by the both sides when being hit by a homogenous electron beam.
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公开(公告)号：US11064600B2
公开(公告)日：2021-07-13
申请号：US16612783
申请日：2018-05-30
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Anand Kumar Dokania , Rolf Karl Otto Behling
IPC: A61B6/00 , A61B6/03 , H01J35/06 , H01J35/08 , H01J35/14 , H05G1/02 , H05G1/08 , H05G1/10 , H05G1/26 , H05G1/32 , H05G1/34 , H05G1/46 , H05G1/52 , H05G1/54 , H01J35/10
Abstract: At least one power supply produces a voltage between a cathode and an anode. The cathode and anode are operable such that electrons emitted from the cathode interact with the anode with energies corresponding to the voltage. The electrons interact with the anode at a focal spot to generate X-rays. The power supply provides the cathode with a cathode current. An electron detector is positioned relative to the anode, and a backscatter electron signal is measured from the anode. The measured backscatter electron signal is provided to a processing unit, which determines a cathode current correction and/or a correction to the voltage between the cathode and the anode using the measured backscatter electron signal and a correlation between anode surface roughness and backscatter electron emission.
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公开(公告)号：US10660595B2
公开(公告)日：2020-05-26
申请号：US16309956
申请日：2017-06-16
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Rolf Karl Otto Behling
IPC: G01N23/04 , A61B6/00 , G01N23/041
Abstract: The present invention relates to an apparatus (10) for imaging an object. It is described to position (210) an X-ray detector relative to at least one X-ray source such that at least a part of a region between the at least one X-ray source and the X-ray detector is an examination region for accommodating an object. In a first mode of operation, with the at least one X-ray source a first focal spot is produced (220), such that at least some first X-rays produced at the first focal spot pass through a first grating of an interferometer arrangement, the first grating positioned at a first position, and such that the at least some first X-rays pass through a second grating of the interferometer arrangement, the second grating positioned at a second position. In the first mode of operation, the at least some first X-rays are detected (230) with the X-ray detector at a detector position. In a second mode of operation, with the at least one X-ray source a second focal spot is produced (240), such that at least some second X-rays produced at the second focal spot avoid the first grating at the first position. In the second mode of operation, the at least some second X-rays are detected (250) with the X-ray detector at the detector position.
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公开(公告)号：US10648930B2
公开(公告)日：2020-05-12
申请号：US15780992
申请日：2016-12-02
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Klaus Jürgen Engel , Gereon Vogtmeier , Rolf Karl Otto Behling
IPC: G01N23/046 , A61B6/03 , A61B6/00
Abstract: The present invention relates to an apparatus for determining an effective energy spectrum of an X-ray tube. It is described to provide (210) a temporally varying acceleration voltage of an X-ray tube for a time period. A temporally varying X-ray tube current is also provided (220) for the time period. At least one product of the temporally varying X-ray tube current and a time interval is determined (230). An effective energy spectrum of the X-ray tube processing the X-ray tube is determined (250) as a function of the at least one product of the temporally varying X-ray tube current and the time interval and as a function of the voltage of the X-ray tube.
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Patent Agency Ranking
公开(公告)号：US10575391B2
公开(公告)日：2020-02-25
申请号：US15779105
申请日：2016-11-18
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Roland Proksa , Rolf Karl Otto Behling , Carolina Ribbing , Lester Donald Miller , Alexander Eitel
Abstract: The present invention relates to a device (34) and a method (70) for determining a status of an X-ray tube (10) of an X-ray system (36). Due to ageing and/or wear of the X-ray tube, the spectrum of the X-ray radiation (30) provided by the X-ray tube may change over the operation time of the X-ray tube. The present invention therefore suggests evaluating spectrally different values detected with an X-ray detector arrangement (32) of the X-ray system. A reference data set representing a reference condition of the X-ray tube by a plurality of spectrally different reference-values (44) and a working data set representing an aged condition of the X-ray tube by a plurality of spectrally different working-values (46) of detected X-ray radiation are used to determine an equivalent filtration function for an filtration material influencing a source X-ray radiation (26) emitted by an anode (16) of the X-ray tube. Accordingly, the filtration function provides the information about the material being used for the filtration and/or its length, which may provide the basis to determine the condition and thus the status of the X-ray tube.
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公开(公告)号：US10058292B2
公开(公告)日：2018-08-28
申请号：US15111382
申请日：2015-01-06
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Rolf Karl Otto Behling , Petrus Johannes Withagen
IPC: A61B6/00
CPC classification number: A61B6/4035
Abstract: An X-ray emitting device (200) with an attenuating element (1) for an X-ray imaging device (100) is proposed. The attenuating element comprises a perforated sheet (3) of strongly X-ray absorbing material such as e.g. tungsten or molybdenum with a sheet thickness of e.g. less than 1 mm. The sheet (3) comprises multiple pinhole openings (5). Therein, a density of pinhole openings is higher at a center region of the sheet than at border regions of the sheet. Accordingly, a transparency to X-rays is higher at the center region than at the border regions. The pinhole openings (5) have geometries such that most parts of contours of the pinhole openings are non-parallel to edges of a focal spot (15) of an X-ray source (101) comprised in the X-ray emitting device. For example, the pinhole openings may have a circular, oval or any other cross-sectional geometry with non-linear edges. In an X-ray imaging device, such attenuating element may avoid beam hardening, needs less space than a conventional bow tie filter and is relatively insensitive to focal spot shifts.
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公开(公告)号：US11506802B2
公开(公告)日：2022-11-22
申请号：US17274258
申请日：2019-09-10
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Johannes Wilhelmus Maria Jacobs , Rolf Karl Otto Behling , Roger Steadman Booker , Gereon Vogtmeier , Onno Jan Wimmers
IPC: G01T1/36 , G01T1/20 , H01L31/0256 , G01T1/29 , G01T1/24
Abstract: The present invention relates to a radiation detector (100) comprising: i) a substrate (110); ii) a sensor, which is coupled to the substrate, the sensor comprising a first array (120) of sensor pixels, a second array (130) of signal read-out elements, and an electronic circuitry which is configured to provide image data based on signals received from the signal read-out elements; iii) a transducer, which is coupled to the substrate and to the sensor, the transducer comprising a third array (140) of subpixels, wherein at least two subpixels are assigned to one sensor pixel; wherein the second array of signal read-out elements and the third array of subpixels correspond to each other; wherein each of the subpixels comprises a radiation conversion material.
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公开(公告)号：US12080508B2
公开(公告)日：2024-09-03
申请号：US17628615
申请日：2020-07-21
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Rolf Karl Otto Behling , Steffen Holzapfel
CPC classification number: H01J35/153 , H01J35/10 , H01J35/30 , H01J2235/088
Abstract: An X-ray source (100) for generating X-ray radiation of first and second energy spectra is proposed, wherein the X-ray intensity imbalance between the first and second energy spectra is reduced as compared to conventional X-ray sources. The reduction of the X-ray intensity imbalance is achieved by configuring a smaller electron impact angle (141) onto the anode (102) when the higher tube voltage is applied as compared to when the lower tube voltage is applied.
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公开(公告)号：US11164714B2
公开(公告)日：2021-11-02
申请号：US16623433
申请日：2018-06-15
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Rolf Karl Otto Behling , Tobias Schlenk , Thorben Repenning
Abstract: The invention proposes an insulator within an X-ray tube having a vacuum side and an ambient side and a feedthrough substantially coinciding with an axis of symmetry at the vacuum side and an axis of symmetry at the ambient side. The axis of symmetry at the vacuum side and the axis of symmetry at the ambient side have an angle of at least 5°, preferably 90°, with respect to each other. An X-ray source comprising such an insulator is presented as well and the present invention also extends to a medical imaging apparatus for generating X-ray images of a patient thereby using an X-ray source with such an insulator. In an embodiment, an X-ray source is provided wherein the insulator is plugged to an electrical connector at the ambient surface.
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