专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US06925151B2 Device for generating X-rays 失效
标题翻译：用于产生X射线的装置
公开(公告)号：US06925151B2
公开(公告)日：2005-08-02
申请号：US10257996
申请日：2002-01-30
申请人： Geoffrey Harding , Bernd David , Jens Peter Schlomka , Leonardus Petrus Maria Tielemans , Willem Potze
发明人： Geoffrey Harding , Bernd David , Jens Peter Schlomka , Leonardus Petrus Maria Tielemans , Willem Potze
IPC分类号： H01J35/10 , H01J35/08 , H01J35/00
CPC分类号： H01J35/08 , H01J2235/082
摘要： The invention relates to a device (1) for generating X-rays (57). The device comprises a source (7) for emitting electrons (53) and a liquid metal for emitting X-rays as a result of the incidence of electrons. The device further comprises a displacing member (11) for displacing the liquid metal through an impingement position (55) where the electrons emitted by the source impinge upon the liquid metal. As a result of the flow of liquid metal through the impingement position the heat, which is generated in the impingement position as a result of the incidence of the electrons upon the liquid metal, is transported away from the impingement position.According to the invention, the displacing member (11) has a contact surface (61), which is in contact with the liquid metal in the impingement position (55), and a driving member (31) for moving the contact surface in a direction which, in the impingement position, is substantially parallel to the contact surface. Thus the flow of liquid metal in the impingement position is achieved as a result of viscous shear forces in the liquid metal caused by friction forces between the liquid metal and the moving contact surface. As a result, the necessary pressure of the liquid metal is limited.
摘要翻译：本发明涉及一种用于产生X射线（57）的装置（1）。该装置包括用于发射电子的源（7）和由于电子的入射而发射X射线的液态金属。该装置还包括用于使液体金属移动通过冲击位置（55）移动的位移构件（11），其中由源发射的电子撞击在液态金属上。作为液体金属流过冲击位置的结果，由于电子在液态金属上的入射而在冲击位置产生的热量被运送离开冲击位置。根据本发明，移动构件（11）具有与冲击位置（55）中的液体金属接触的接触表面（61）和用于使接触表面沿方向移动的驱动构件（31）其在冲击位置处基本上平行于接触表面。因此，液态金属在冲击位置的流动是由于液态金属与可动接触面之间的摩擦力引起的液态金属中的粘性剪切力而实现的。结果，液态金属的必要压力受到限制。

2. 发明授权

US07471769B2 X-ray source provided with a liquid metal target 失效
标题翻译： X射线源设有液态金属靶
公开(公告)号：US07471769B2
公开(公告)日：2008-12-30
申请号：US10481802
申请日：2002-06-20
申请人： Geoffrey Harding , Bernd David , Rainer Willi Eckart , Jens Peter Schlomka
发明人： Geoffrey Harding , Bernd David , Rainer Willi Eckart , Jens Peter Schlomka
IPC分类号： H01J35/08 , H01J35/00
CPC分类号： H01J35/08 , H01J2235/082
摘要： An X-ray source and an X-ray apparatus with an X-ray source are provided, the X-ray source includes a liquid metal target which flows through a system of ducts and is conducted through a duct section which has a flow cross-section that is reduced relative to that of the system of ducts. The X-ray source provides a pressure source for acting on the liquid metal target such that the pressure in the liquid metal target at the area of the reduced flow cross-section equals essentially a selectable reference value or remains essentially in a pressure range between selectable limit values of the pressure. A comparatively small thickness of a window can thus be realized in conjunction with a comparatively high flow speed.
摘要翻译：提供具有X射线源的X射线源和X射线装置，X射线源包括流过管道系统的液体金属靶，并且通过具有流动横截面的管道部分传导，相对于管道系统的截面减小。 X射线源提供用于作用在液体金属靶上的压力源，使得在减小的流动横截面的区域中的液态金属靶中的压力基本上等于可选择的参考值，或基本保持在可选择的参考值之间的压力范围内极限值的压力。因此，可以结合较高的流速来实现窗口的相对较小的厚度。

3. 发明授权

US06744845B2 Computed tomography apparatus for determining the pulse momentum transfer spectrum 失效
标题翻译：用于确定脉冲动量传递光谱的计算机断层摄影装置
公开(公告)号：US06744845B2
公开(公告)日：2004-06-01
申请号：US10114766
申请日：2002-04-03
申请人： Geoffrey Harding , Jens Peter Schlomka
发明人： Geoffrey Harding , Jens Peter Schlomka
IPC分类号： G21K112
CPC分类号： A61B6/483 , A61B6/032 , G01N23/046 , G01N2223/419
摘要： The invention relates to a computed tomography apparatus which includes a scanning unit which is rotatable, relative to an examination zone (13), around an axis of rotation (14) which extends through the examination zone (13), and also includes a radiation source (S) for generating a primary fan beam (41) which traverses the examination zone (13), and a two-dimensional detector array (D) which includes a plurality of detector elements and a part of the measuring surface of which detects primary radiation from the primary fan beam (41) whereas an other part of its measuring surface detects scattered radiation produced in the examination zone (13). In order to avoid reconstruction artefacts as much as possible in a computed tomography apparatus of this kind, in accordance with the invention it is proposed to arrange a modulation unit (33) between the radiation source (S) and the examination zone (13) in order to realize a temporally and spatially periodic modulation of the primary fan beam (41).
摘要翻译：本发明涉及一种计算机断层摄影装置，其包括扫描单元，该扫描单元围绕延伸穿过检查区（13）的旋转轴线（14）相对于检查区（13）可旋转，并且还包括辐射源（S），用于产生穿过检查区（13）的主风扇光束（41）;以及二维检测器阵列（D），其包括多个检测器元件，并且其测量表面的一部分检测主辐射来自主扇形光束（41），而其测量表面的另一部分检测在检查区（13）中产生的散射辐射。为了在这种计算机断层摄影装置中尽可能地避免重建伪影，根据本发明，提出了在辐射源（S）和检查区（13）之间布置调制单元（33）以实现主风扇光束（41）的时间和空间周期性调制。

4. 发明授权

US06647094B2 X-ray source provided with a liquid metal target 失效
标题翻译： X射线源设有液态金属靶
公开(公告)号：US06647094B2
公开(公告)日：2003-11-11
申请号：US10174665
申请日：2002-06-19
申请人： Geoffrey Harding , Jens Peter Schlomka
发明人： Geoffrey Harding , Jens Peter Schlomka
IPC分类号： H01J3508
CPC分类号： H01J35/08 , H01J2235/082
摘要： The invention relates to an arrangement for generating X-rays upon incidence of electrons (4), which arrangement includes a liquid metal zone (7) in which a liquid metal (9) is provided as an X-ray target in such a manner that it can flow past a zone of electron incidence (8). In order to allow a pump of reduced capacity to be employed in such a device in order to provide the movement of the liquid metal, in accordance with the invention it is proposed to realize a pressure zone (10) which is separate from the liquid metal zone (7) and is provided with a pressure medium (11) in such a manner that the pressure medium (11) can exert a pressure on the liquid metal (9) present in the liquid metal zone (7) in order to force the liquid metal (9) past the zone of electron incidence (8), the pressure zone (10) being provided with a pressure accumulator (R3) which can be replenished in order to apply the pressure.
摘要翻译：本发明涉及一种在电子（4）入射时产生X射线的装置，该装置包括液态金属区（7），液态金属（9）设置为液态金属（9）作为X射线靶，它可以流过电子入射区（8）。为了允许在这种装置中使用容量较小的泵以提供液态金属的移动，根据本发明，提出实现与液态金属分开的压力区（10）区域（7），并且设置有压力介质（11），使得压力介质（11）可以对存在于液态金属区域（7）中的液态金属（9）施加压力，以便迫使液体金属（9）经过电子入射区（8），压力区（10）设置有可补充的压力蓄能器（R3），以便施加压力。

5. 发明授权

US06961408B2 Device for generating X-rays having a liquid metal anode 失效
标题翻译：用于产生具有液态金属阳极的X射线的装置
公开(公告)号：US06961408B2
公开(公告)日：2005-11-01
申请号：US10506949
申请日：2003-02-26
申请人： Geoffry Harding , Bernd David , Axel Thran , Jens Peter Schlomka
发明人： Geoffry Harding , Bernd David , Axel Thran , Jens Peter Schlomka
IPC分类号： H05G1/02 , H01J35/08 , H01J35/12 , H05G2/00
CPC分类号： H01J35/08 , H01J2235/082 , H01J2235/1262
摘要： The invention relates to a device for generating X-rays (31). The device has a source (5) for emitting electrons (27) accommodated in a vacuum space (3). The X-rays are emitted by a liquid metal as a result of the incidence of the electrons. The liquid metal flows through a constriction (13) where the electrons emitted by the source impinge upon the liquid metal. The constriction is bounded by a thin window (23), which is made from a material which is transparent to electrons and X-rays and which separates the liquid metal in the constriction from the vacuum space, and by a wall (25) opposite to the window. According to the invention, the wall (25) has a profile (p) which matches a profile (p′) which the window (23) has, during operation, as a result of a deformation of the window caused by a pressure of the liquid metal in the constriction (13). Thus, it is achieved that the constriction has a predetermined intended cross-sectional area, and a decrease of the flow velocity and an accompanying excessive increase of the pressure at the location of the deformation of the window are prevented.
摘要翻译：本发明涉及一种用于产生X射线的装置（31）。该装置具有用于发射容纳在真空空间（3）中的电子（27）的源（5）。由于电子的入射，X射线被液态金属发射。液体金属流过收缩部（13），其中由源发射的电子撞击液态金属。狭缝由薄的窗口（23）限定，薄的窗口（23）由对电子和X射线透明的材料制成，并且将收缩部中的液体金属与真空空间分开，并且通过与窗户。根据本发明，壁（25）具有与窗口（23）具有的轮廓（p'）匹配的轮廓（p），在操作期间，由于窗口（23）的压力导致的窗口的变形收缩部（13）中的液态金属。因此，实现了收缩具有预定的预期横截面积，并且防止了流动速度的降低和伴随着窗口变形位置处压力的过度增加。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式