-
公开(公告)号：US11226298B2
公开(公告)日：2022-01-18
申请号：US16586386
申请日：2019-09-27
发明人： Steffen Kappler , Marcus Radicke , Jörg Freudenberger , Anja Fritzler , Peter Geithner , Peter Hackenschmied , Thomas Weber
IPC分类号： G01N23/20 , G01N23/04 , G01N23/20008 , A61B6/00
摘要： An x-ray imaging system includes an x-ray source configured to emit x-ray radiation towards a sample, and a primary detector configured to detect x-ray radiation from the x-ray source passing through the sample. The x-ray imaging system also includes a secondary detector configured to detect x-ray radiation from the x-ray source scattered in the sample, and imaging optics configured to guide x-ray radiation scattered in the sample onto the secondary detector.
-
公开(公告)号：US11955307B2
公开(公告)日：2024-04-09
申请号：US17734335
申请日：2022-05-02
CPC分类号： H01J35/065 , H05G1/54 , H01J2235/068 , H05G1/70
摘要： At least one example embodiment provides an electron emitter apparatus having a first ring of field-effect emitter needles, the field-effect emitter needles of the first ring forming a first emitter surface on an inner side of the first ring; and a second ring of field-effect emitter needles, the field-effect emitter needles of the second ring forming a second emitter surface on an inner side of the second ring, wherein the first ring and the second ring are arranged in such that the first emitter surface and the second emitter surface form a substantially contiguous three-dimensional overall emitter surface, the substantially contiguous three-dimensional overall emitter surface defining a hollow channel along a longitudinal axis of the electron emitter apparatus.
-
公开(公告)号：US11670476B2
公开(公告)日：2023-06-06
申请号：US17532267
申请日：2021-11-22
发明人： Anja Fritzler , Peter Geithner , Petra Maurer , Thomas Weber , Brigitte Streller
IPC分类号： H01J35/08
CPC分类号： H01J35/112
摘要： An x-ray anode for an x-ray emitter has a structured surface provided for impingement with electrons. According to an embodiment of the invention, the structured surface has a surface structure which alternates periodically at least in sections and which varies in the micrometer range with respect to its depth extension and periodicity.
-
公开(公告)号：US11361929B2
公开(公告)日：2022-06-14
申请号：US16891509
申请日：2020-06-03
摘要： An x-ray tube includes an electron emitter to emit an electron beam; and a multilayer anode including a first anode layer facing the electron beam and a second anode layer facing away from the electron beam. The first anode layer includes a first anode material to generate a braking radiation via the electron beam and the second anode layer includes a second anode material to generate a further x-ray radiation via the braking radiation. The further x-ray radiation is relatively more monochromatic than the braking radiation and wherein the first anode layer and the second anode layer adjoin in a planar manner.
-
公开(公告)号：US11075052B2
公开(公告)日：2021-07-27
申请号：US16585156
申请日：2019-09-27
摘要： The present disclosure provides an x-ray device including a housing configured to provide a vacuum therein, a cathode arranged inside the housing and configured to emit electrons, an anode arranged inside the housing and configured to produce x-ray radiation when impacted by electrons emitted by the cathode, and a converter configured to convert the x-ray radiation produced by the anode into monochromatic x-ray radiation, wherein the anode is configured to produce x-ray radiation in transmission and is arranged between the cathode and the converter. The present disclosure may be used in medical imaging, therapy, spectroscopy, and the like. Geometries and configurations may be improved compared to previously known x-ray devices when it comes to requirements for space, materials used, complexity of electrical wiring, distance between cathode and anode, and providing supplementary functions.
-
公开(公告)号：US10043632B2
公开(公告)日：2018-08-07
申请号：US15679648
申请日：2017-08-17
发明人： Anja Fritzler , Peter Geithner
摘要： A thermionic emission device includes an indirectly heatable main emitter, which is constructed as a flat emitter with a main emission surface, and at least one connectible heat emitter with a heat emission surface. The heat emission surface is disposed at a predefinable distance from the main emission surface. The main emission surface can be asymmetrically heated by the heat emission surface. In the operating state, the main emitter is at a main potential and the heat emitter is at a heating potential which differs from the main potential. An x-ray tube with the thermionic emission device has a longer service life with a consistent image quality.
-
公开(公告)号：US11901152B2
公开(公告)日：2024-02-13
申请号：US17874678
申请日：2022-07-27
发明人： Peter Geithner , Jörg Freudenberger , Christoph Jud , Anja Fritzler , Josef Deuringer , Peter Hackenschmied
CPC分类号： H01J35/065 , H01J35/24 , A61B6/022 , A61B6/4007 , H01J35/064 , H01J2235/068 , H05G1/52
摘要： Some example embodiments provide an x-ray tube for a stereoscopic imaging having an evacuated x-ray tube housing; an electron emitter apparatus in the x-ray tube housing, the electron emitter apparatus including a first field effect emitter with a first emitter surface and a second field effect emitter with a second emitter surface, at least one of the first emitter surface or the second emitter surface being segmented such that a portion of the at least one of the first emitter surface or the second emitter surface can be set relative to the respective overall emitter surface by selectively switching emitter segments of the at least one of the first emitter surface or the second emitter surface; an anode unit in the x-ray tube housing, the anode unit configured to generate x-ray radiation for the stereoscopic imaging as a function of electrons striking two focal points; and a control unit.
-
公开(公告)号：US11227739B2
公开(公告)日：2022-01-18
申请号：US16574719
申请日：2019-09-18
发明人： Anja Fritzler , Peter Geithner , Petra Maurer , Thomas Weber , Brigitte Streller
摘要： An x-ray anode for an x-ray emitter has a structured surface provided for impingement with electrons. According to an embodiment of the invention, the structured surface has a surface structure which alternates periodically at least in sections and which varies in the micrometer range with respect to its depth extension and periodicity.
-
公开(公告)号：US20200187339A1
公开(公告)日：2020-06-11
申请号：US16585156
申请日：2019-09-27
摘要： The present disclosure provides an x-ray device including a housing configured to provide a vacuum therein, a cathode arranged inside the housing and configured to emit electrons, an anode arranged inside the housing and configured to produce x-ray radiation when impacted by electrons emitted by the cathode, and a converter configured to convert the x-ray radiation produced by the anode into monochromatic x-ray radiation, wherein the anode is configured to produce x-ray radiation in transmission and is arranged between the cathode and the converter. The present disclosure may be used in medical imaging, therapy, spectroscopy, and the like. Geometries and configurations may be improved compared to previously known x-ray devices when it comes to requirements for space, materials used, complexity of electrical wiring, distance between cathode and anode, and providing supplementary functions.
-
公开(公告)号：US20200182806A1
公开(公告)日：2020-06-11
申请号：US16586386
申请日：2019-09-27
发明人： Steffen Kappler , Marcus Radicke , Jörg Freudenberger , Anja Fritzler , Peter Geithner , Peter Hackenschmied , Thomas Weber
IPC分类号： G01N23/04 , G01N23/20008 , G01N23/2206
摘要： An x-ray imaging system includes an x-ray source configured to emit x-ray radiation towards a sample, and a primary detector configured to detect x-ray radiation from the x-ray source passing through the sample. The x-ray imaging system also includes a secondary detector configured to detect x-ray radiation from the x-ray source scattered in the sample, and imaging optics configured to guide x-ray radiation scattered in the sample onto the secondary detector.
-
-
-
-
-
-
-
-
-
搜索结果
10 条记录 (耗时 0.016 秒)
