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公开(公告)号：US08351576B2
公开(公告)日：2013-01-08
申请号：US12936990
申请日：2009-04-07
IPC分类号： H01J35/18
CPC分类号： H01J35/16 , H01J2235/168 , H01J2235/205
摘要： An X-ray tube (1) comprising a cathode (3), an anode (5) and a further electrode (7) is proposed. Therein, the further electrode is arranged and adapted such that, due to impact of 'free electrons (27) coming from the anode (5), the further electrode (7) negatively charges to an electrical potential lying between a cathode's potential and an anode's potential. The further electrode (7) may be passive, i.e. substantially electrically isolated and not connected to an active external voltage supply. The further electrode (7) may act as an ion pump removing ions from within a primary electron beam (21) and furthermore also removing atoms of residual gas within the housing (11) of the X-ray tube (1). In order to further increase the ion pumping capability of the further electrode (7), a magnetic field generator (61) can be arranged adjacent to the further electrode (7).
摘要翻译： 提出了包括阴极（3），阳极（5）和另外的电极（7）的X射线管（1）。 其中，另外的电极被布置和适配成使得由于来自阳极（5）的自由电子（27）的冲击，另外的电极（7）负电荷到位于阴极电位和阳极 潜在。 另外的电极（7）可以是无源的，即基本上电隔离并且不连接到有源外部电压源。 另外的电极（7）可以用作从一次电子束（21）内去除离子的离子泵，并且还去除X射线管（1）的壳体（11）内的残余气体的原子。 为了进一步提高另一电极（7）的离子泵浦能力，可以将磁场发生器（61）布置成与另一电极（7）相邻。
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公开(公告)号：US20110038463A1
公开(公告)日：2011-02-17
申请号：US12936990
申请日：2009-04-07
CPC分类号： H01J35/16 , H01J2235/168 , H01J2235/205
摘要： An X-ray tube (1) comprising a cathode (3), an anode (5) and a further electrode (7) is proposed. Therein, the further electrode is arranged and adapted such that, due to impact of ‘free electrons (27) coming from the anode (5), the further electrode (7) negatively charges to an electrical potential lying between a cathode's potential and an anode's potential. The further electrode (7) may be passive, i.e. substantially electrically isolated and not connected to an active external voltage supply. The further electrode (7) may act as an ion pump removing ions from within a primary electron beam (21) and furthermore also removing atoms of residual gas within the housing (11) of the X-ray tube (1). In order to further increase the ion pumping capability of the further electrode (7), a magnetic field generator (61) can be arranged adjacent to the further electrode (7).
摘要翻译： 提出了包括阴极（3），阳极（5）和另外的电极（7）的X射线管（1）。 其中，另外的电极被布置和适配成使得由于来自阳极（5）的自由电子（27）的冲击，另外的电极（7）负电荷到位于阴极电位和阳极 潜在。 另外的电极（7）可以是无源的，即基本上电隔离并且不连接到有源外部电压源。 另外的电极（7）可以用作从一次电子束（21）内去除离子的离子泵，并且还去除X射线管（1）的壳体（11）内的残余气体的原子。 为了进一步提高另一电极（7）的离子泵浦能力，可以将磁场发生器（61）布置成与另一电极（7）相邻。
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公开(公告)号：US08654924B2
公开(公告)日：2014-02-18
申请号：US13131035
申请日：2009-11-19
CPC分类号： H05G1/36 , H01J35/04 , H01J35/08 , H01J35/26 , H01J2235/1204
摘要： An X-ray tube including a target adapted for generating X-rays upon impact of an electron beam on a focal spot, and a further electrode. The further electrode is arranged and adapted for measuring thermo ionic electron emission from the target. The X-ray tube is adapted for providing a signal relating to a temperature of the target based on thermo ionic electron emission measured by the further electrode.
摘要翻译： 包括适于在电子束撞击焦斑时产生X射线的靶的X射线管和另一电极。 另外的电极被布置和适于测量来自靶的热离子电子发射。 X射线管适于基于由另一电极测量的热离子电子发射来提供与靶的温度有关的信号。
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4.发明授权Hybrid design of an anode disk structure for high prower X-ray tube configurations of the rotary-anode type 有权混合设计的阳极盘结构，用于高反射型阳极型X射线管配置公开(公告)号：US08553844B2
公开(公告)日：2013-10-08
申请号：US12673510
申请日：2008-08-12
申请人： Astrid Lewalter , Rainer Pietig , Albert Langkamp , Heiko Richter , Thomas Behnisch , Werner Hufenbach , Rolf Karl Otto Behling , Christoph Bathe
发明人： Astrid Lewalter , Rainer Pietig , Albert Langkamp , Heiko Richter , Thomas Behnisch , Werner Hufenbach , Rolf Karl Otto Behling , Christoph Bathe
CPC分类号： H01J35/108 , H01J2235/081 , H01J2235/088 , H01J2235/1006
摘要： This invention relates to high power X-ray sources, in particular to those equipped with a rotating X-ray anode capable of delivering a higher short time peak power than conventional rotating x-ray anodes. This invention can overcome the thermal limitation of peak power by allowing fast rotation of the anode and by introducing a lightweight material with high thermal conductivity in the region adjacent to the focal track material. The fast rotation can be provided by using sections of the rotating anode disk made of anisotropic high specific strength materials with high thermal stability that can be specifically adapted to the high stresses of anode operation. Uses include high speed image acquisition for X-ray imaging, for example, of moving objects in real-time such as in medical radiography.
摘要翻译： 本发明涉及高功率X射线源，特别是涉及能够传送比常规旋转x射线阳极更高的短时峰值功率的旋转X射线阳极的那些。 本发明可以通过允许阳极的快速旋转并且通过在与焦点轨道材料相邻的区域中引入具有高导热性的轻质材料来克服峰值功率的热限制。 可以通过使用由具有高热稳定性的各向异性高比强度材料制成的旋转阳极盘的部分提供快速旋转，其可以特别适用于阳极操作的高应力。 用途包括用于X射线成像的高速图像采集，例如实时移动物体，如医学放射学。
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5.发明申请METHOD AND DEVICE FOR LOAD DEPENDENT RESIZING OF A FOCAL SPOT OF AN X-RAY GENERATING DEVICE 有权用于X射线发生装置的焦点点的负载相关的方法和装置公开(公告)号：US20120039443A1
公开(公告)日：2012-02-16
申请号：US13265297
申请日：2010-04-19
IPC分类号： H05G1/46
摘要： In an X-ray generating device (2) a temperature of a focal spot (21) may be determined. Furthermore a load condition is determined, which may also take into account a planned operation procedure of the X-ray generating device (2). The focal spot of the X-ray generating device is then automatically resizable based at least in part on the load condition.
摘要翻译： 在X射线产生装置（2）中，可以确定焦点（21）的温度。 此外，确定了负载条件，这也可以考虑X射线产生装置（2）的计划的操作过程。 至少部分地基于负载条件，X射线产生装置的焦点可以自动调节大小。
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公开(公告)号：US20110222662A1
公开(公告)日：2011-09-15
申请号：US13131035
申请日：2009-11-19
CPC分类号： H05G1/36 , H01J35/04 , H01J35/08 , H01J35/26 , H01J2235/1204
摘要： An X-ray tube (1), a medical device (21) comprising an X-ray tube, a program element and a computer readable medium are proposed. The X-ray tube comprises a target (3) adapted for generating X-rays upon impact of an electron beam (7) on a focal spot (9), and a further electrode (11). The further electrode (11) is arranged and adapted for measuring thermo ionic electron emission from the target (3). The X-ray tube is adapted for providing a signal relating to a temperature of the target based on thermo ionic electron emission measured by the further electrode (11). The medical device (21) comprises an X-ray tube (1) according to the invention and a temperature evaluation unit (23) connected to the X-ray tube.
摘要翻译： 提出了一种X射线管（1），包括X射线管，程序元件和计算机可读介质的医疗装置（21）。 X射线管包括适于在电子束（7）撞击焦点（9）时产生X射线的靶（3）和另一电极（11）。 另外的电极（11）被布置和适于测量来自目标（3）的热离子电子发射。 X射线管适于基于由另一电极（11）测量的热离子电子发射来提供与靶的温度有关的信号。 医疗装置（21）包括根据本发明的X射线管（1）和连接到X射线管的温度评估单元（23）。
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公开(公告)号：US20100310038A1
公开(公告)日：2010-12-09
申请号：US12680211
申请日：2008-09-25
IPC分类号： A61B6/03
CPC分类号： A61B6/032 , A61B6/06 , A61B6/4291
摘要： The invention relates to a computer tomography system comprising a support structure, more than one source of radiation, a detector array, and a grid, wherein the support structure defines a space to accommodate an object of interest which can be moved through the ring. The object of interest is radiographed by means of the sources of radiation which are located at the perimeter of the support structure and are movable along said perimeter. The sources are arranged displaced behind each other. The detector array is located at the perimeter of the support structure opposite the sources of radiation, and is movable simultaneously with the sources along the perimeter of the ring. The grid is arranged on the side of the detector array, orientated to the sources, to focus detector modules arranged on the detector array. By means of said CT system, improved radiographic images can be achieved from the object of interest.
摘要翻译： 本发明涉及一种计算机断层摄影系统，其包括支撑结构，多于一个辐射源，检测器阵列和网格，其中所述支撑结构限定空间以容纳可移动穿过所述环的感兴趣对象。 感兴趣的物体借助位于支撑结构周边的辐射源进行射线照相，并可沿所述周边移动。 来源被排列在彼此之后。 检测器阵列位于与辐射源相对的支撑结构的周边，并且可沿着环的周边与源同时移动。 栅格布置在检测器阵列的侧面上，定向到源极，以便将布置在检测器阵列上的检测器模块聚焦。 通过所述CT系统，可以从感兴趣的对象实现改进的放射照相图像。
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公开(公告)号：US20110135066A1
公开(公告)日：2011-06-09
申请号：US13058341
申请日：2009-08-06
IPC分类号： H01J35/14
CPC分类号： H01J35/10 , H01J2235/086
摘要： The present invention refers to X-ray tubes for use in imaging applications with an improved power rating and, more particularly, to a multi-segment anode target (102′) for an X-ray based scanner system using an X-ray tube of the rotary anode type, said X-ray tube comprising a rotatably supported essentially disk-shaped rotary anode (102) with an anode target (102′) for emitting X-radiation when being exposed to an electron beam (105a) incident on a surface of said anode target (102′), wherein said rotary anode disk (102) is divided into at least two anode disk segments (102a and 102b) with each of said anode disk segments having a conical surface inclined by a distinct acute angle (α) with respect to a plane normal to the rotational axis (103a) of said rotary anode disk (102) and thus having its own focal track width. A control unit for pulsing the electron beam (105a) is provided which is adapted for pulsing the electron beam (105a) such that the electron beam has a duty cycle which takes on its switched on state only when incident on a selectable anode disk segment (102a or 102b) with an inclination angle (α) from a given angular range or on a anyone from a selectable set of these anode disk segments (102a or 102b). Controlling the electron beam's pulse sequence thereby allows to select the optimal segment of the focal spot track (106b) with the smallest possible inclination angle (α) dependent on the angular size (β) of a desired field of view and helps to achieve a maximum brightness of the focal spot (106) as well as a maximized power rating. An advantage of the invention consists in an enhanced image quality compared to conventional rotary anodes as known from the prior art.
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公开(公告)号：US20100189211A1
公开(公告)日：2010-07-29
申请号：US12668044
申请日：2008-07-07
CPC分类号： H01J35/10
摘要： Cone-beamCT scanners with large detector arrays suffer from increased scatter radiation. This radiation may cause severe image artefacts. According to an exemplary embodiment of the present invention, an examination apparatus is provided which directly measures the scatter radiation. The measurement is performed by utilizing an X-raytube with an anode disk (500) comprising a slit (510) which is positioned in a 5 target area (512) of the anode disk. The slit opening is adapted to be penetrated at least partially by the electron beam (580) from the cathode of the x-raytube to alternatingly create a secondary source of X-rays (555) from a second anode (550), whereby the secondary source is located outside the focus area of the anti-scatter grid of the X-raydetector. Cone-beamCT scanners may also suffer from cone beam artifacts. An X-10 raytube is described, which helps measuring an additional set of scan data.
摘要翻译： 具有大检测器阵列的锥束CT扫描仪遭受增加的散射辐射。 这种辐射可能导致严重的图像伪影。 根据本发明的示例性实施例，提供一种直接测量散射辐射的检查装置。 通过利用具有位于阳极盘的5个目标区域（512）中的狭缝（510）的阳极盘（500）的X射线管来进行测量。 狭缝开口适于至少部分地从X射线管的阴极通过电子束（580）穿透，以从第二阳极（550）交替地产生X射线（555）的次级源，由此二次 源位于X射线检测器的防散射网格的对焦区域的外部。 锥束CT扫描仪也可能遭受锥束伪影。 描述了X-10射线管，其帮助测量附加的一组扫描数据。
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10.发明申请X-RAY TUBE WHOSE ELECTRON BEAM IS MANIPULATED SYNCHRONOUSLY WITH THE ROTATIONAL ANODE MOVEMENT 审中-公开电子束与旋转阳极运动同步控制的X射线管公开(公告)号：US20090154649A1
公开(公告)日：2009-06-18
申请号：US12301636
申请日：2007-05-14
IPC分类号： H01J35/30
CPC分类号： H01J35/10 , H01J35/14 , H01J35/305
摘要： It is described an X-ray tube (100) comprising a rotating anode (130), which is provided with a pull electrode (140). The pull electrode (140) interacts with a fixed electron source (110) in order to generate a modulated electron beam (120a, 120b). The beam modulation may be an intensity variation and/or a spatial deflection. The pull electrode (140) is mounted in a fixed position with respect to the anode (130) and rotates together therewith. The pull electrode (140) may have a hole (141) for passing the electron beam (120a). When being in front of the electron source (110), the pull electrode (140) causes a high electric field (142a) such that a strong electron beam (120a) is generated. When being not in front of the electron source (110) only a low current or a zero current electron beam (120b) is generated. However, the pull electrode (740) may also cause a radial beam deflection such that depending on the angular position of the anode (730) the position of a focal spot (721a, 721b) of the electron beam (720) is varied.
摘要翻译： 描述了包括设置有拉电极（140）的旋转阳极（130）的X射线管（100）。 拉电极（140）与固定电子源（110）相互作用以产生调制的电子束（120a，120b）。 光束调制可以是强度变化和/或空间偏转。 拉电极（140）相对于阳极（130）安装在固定位置并与其一起旋转。 拉电极（140）可以具有用于使电子束（120a）通过的孔（141）。 当在电子源（110）的前面时，拉电极（140）引起高电场（142a），使得产生强电子束（120a）。 当不在电子源（110）的前面时，仅产生低电流或零电流电子束（120b）。 然而，拉电极（740）也可能引起径向光束偏转，使得根据阳极（730）的角位置，电子束（720）的焦点（721a，721b）的位置是变化的。
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