公开(公告)号：US20040202282A1

公开(公告)日：2004-10-14

申请号：US10409854

申请日：2003-04-09

Applicant: Varian Medical Systems, Inc.

Inventor： Robert Steven Miller

IPC: H01J005/18 ,  H01J035/18

CPC classification number: H01J35/16 ,  H01J2235/166

Abstract: A shielding disk for managing x-ray emission form a stationary anode x-ray tube is disclosed. The stationary anode x-ray tube includes an anode housing and a stainless steel can that together form an evacuated enclosure and respectively contain a stationary anode and a cathode assembly. The shielding disk, comprised of tungsten, is interposed between the anode housing and the can, and is formed with a region, such as a hole, formed through a central portion thereof. During tube operation, electrons pass through the shielding disk hole to impact a target surface on the anode and produce x-rays. Those x-rays that do not pass through a window defined in the anode housing to exit the tube but instead emanate toward the can, are intercepted and absorbed by the shielding disk before entering the can. This results in a reduced need for lead shielding disposed about external surfaces of the x-ray tube.

Abstract translation: 公开了一种用于管理x射线辐射的屏蔽盘，其形成固定的阳极x射线管。 固定阳极x射线管包括阳极壳体和不锈钢罐，其一起形成抽真空的外壳并分别包含固定阳极和阴极组件。 由钨组成的屏蔽盘插入在阳极壳体和罐之间，并且形成有通过其中心部分形成的诸如孔的区域。 在管操作期间，电子穿过屏蔽盘孔以冲击阳极上的目标表面并产生x射线。 那些不通过阳极壳体中限定的离开管而是朝向罐发出的窗口的X射线在进入罐之前被屏蔽盘拦截和吸收。 这导致对围绕x射线管的外表面设置的引线屏蔽的需求减少。

公开(公告)号：US20020003862A1

公开(公告)日：2002-01-10

申请号：US09934265

申请日：2001-08-21

Applicant: Varian Medical System Inc.

Inventor： Don Warburton

IPC: H01J005/18

CPC classification number: H01J35/02 ,  H01J35/10 ,  H01J2235/12

Abstract: The present invention relates to structures within an x-ray device including an x-ray can, an x-ray can window frame insert, a rotor sleeve, and a bearing support assembly for a rotor structure. The various structures are fabricated from a chromium alloy of copper that is essentially oxygen free copper having a minor amount of chromium, the combination of which imparts desirable qualities to the x-ray device structures, including efficient heat sink and emissivity qualities that are beneficial in an x-ray device environment. In one preferred embodiment of the present invention, oxygen free high conductivity (OFHC) copper is melted in an RF furnace in the presence of a minor amount of chromium and is either ingot cast or powder metallurgically cast into a desired article and further fabricated into a finished article.

Abstract translation: 本发明涉及x射线装置内的结构，其包括x射线罐，x射线罐窗框架插入件，转子套筒和用于转子结构的轴承支撑组件。 各种结构由铜的铬合金制成，其基本上是不含氧的铜，其具有少量的铬，其组合赋予x射线装置结构所需的质量，包括有效的散热器和发射率质量，其有利于 x射线设备环境。 在本发明的一个优选实施方案中，无氧高导电性（OFHC）铜在少量铬存在下在RF炉中熔化，并且是铸铸或粉末冶金铸造成所需制品并进一步制成 成品。

公开(公告)号：US20040258208A1

公开(公告)日：2004-12-23

申请号：US10860898

申请日：2004-06-04

Inventor： Eberhard Lenz ,  Peter Rother ,  Jutta Rother ,  Peter Schardt

IPC: H01J005/18 ,  H01J035/18

CPC classification number: H01J35/305 ,  H01J35/18

Abstract: A rotary piston tube for an x-ray radiator is provided in which the vacuum housing, accommodating an anode and a cathode and displaceable in rotation, comprises a 360null all-around ray exit window. For optimization of the ray exit window, this is produced according to one of the subsequently stated material specifications: a) a high-temperature steel or a high-temperature chromium and/or nickel alloy, listed in the standard EN 10273 and EN 10302, at a wall thickness between 0.1 to 0.4 mm; b) a titanium material at a wall thickness between 0.2 and 2 mm; and c) a ceramic material at a wall thickness between 1 mm and 5 mm.

Abstract translation: 提供了一种用于x射线辐射器的旋转活塞管，其中容纳阳极和阴极并且可旋转移位的真空壳体包括360°全方位射线出射窗。 为了优化射线出口窗口，根据随后提出的材料规格之一生产：a）标准EN 10273和EN 10302中列出的高温钢或高温铬和/或镍合金， 壁厚在0.1〜0.4mm之间; b）在0.2至2mm之间的壁厚度的钛材料; 和c）壁厚在1mm至5mm之间的陶瓷材料。

公开(公告)号：US20030068013A1

公开(公告)日：2003-04-10

申请号：US10295859

申请日：2002-11-18

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Yutaka Ochiai ,  Tutomu Inazuru

IPC: H01J005/18

CPC classification number: H05G1/06 ,  H01J35/02 ,  H01J35/16 ,  H01J2235/163 ,  H05G1/02

Abstract: An x-ray emitting window is formed at a front end face, and a taper surface tilted with respect to the x-ray emitting direction is formed near the emitting window, whereby an object to be inspected can be prevented from abutting against the front end face even if the object is pivoted about an axis intersecting the emitting direction while the object is disposed closer to the x-ray emitting window. As a consequence, while the object is disposed closer to the x-ray emitting position, the orientation of the object can be changed. Therefore, when inspecting the internal structure of the object and the like by irradiating the object with x-rays and detecting the x-rays transmitted through the object, not only a magnified penetration image of the object with a high magnification rate is obtained, but also the internal structure of the object and the like can be verified in detail by changing the orientation of the object.

公开(公告)号：US20040258200A1

公开(公告)日：2004-12-23

申请号：US10825743

申请日：2004-04-16

Inventor： Osamu Tsujii

IPC: G01N023/04 ,  H01J005/18 ,  H01J035/18

CPC classification number: A61B6/588 ,  A61B6/032 ,  A61B6/04 ,  A61B6/0457 ,  A61B6/4071 ,  A61B6/4291 ,  A61B6/5241 ,  A61B6/583

Abstract: In an apparatus without a helical movement, a reconstruction error considerably increases as a radiation angle increases. In a prior art embodiment, for example, a one-side value of the radiation angle is 9.5 degrees, and it is predicted that the reconstruction error at its periphery considerably increases. In a radiation imaging apparatus including a radiation generating source for radiating radiation to a subject, a rotating unit for rotating the subject exposed to the radiation from the radiation generating source, and a two-dimensional detector for detecting the radiation, a distance between the radiation generating source and the two-dimensional detector is approximately set to a value equal to or more than 240 cm.

Abstract translation: 在没有螺旋运动的装置中，随着辐射角度的增加，重建误差显着增加。 在现有技术的实施例中，例如，辐射角的单面值为9.5度，并且预测其周边处的重建误差显着增加。 在包括用于向对象辐射辐射的辐射发生源的辐射成像装置中，用于旋转暴露于来自辐射发生源的辐射的对象的旋转单元和用于检测辐射的二维检测器，辐射之间的距离 产生源和二维检测器近似设置为等于或大于240cm的值。

公开(公告)号：US20040125919A1

公开(公告)日：2004-07-01

申请号：US10476576

申请日：2003-10-31

Inventor： Lilian Martinez ,  Daniel Veillet

IPC: H01J005/18 ,  H01J035/18

CPC classification number: H01J35/18

Abstract: The invention relates to X-ray vacuum tubes. To let the X-rays out of the tube, in the case of an X-ray generator tube, when the wall of the tube is made of metal, the invention provides an exit window (50) that is made of pyrolytic graphite. The window preferably has a bell shape and is brazed to a copper collar (60) that is itself brazed to the metal wall (10) of the tube.

Abstract translation: 本发明涉及X射线真空管。 为了使X射线从管中出来，在X射线发生器管的情况下，当管的壁由金属制成时，本发明提供了由热解石墨制成的出射窗（50）。 窗口优选地具有钟形形状并钎焊到本身钎焊到管的金属壁（10）的铜环（60）。