公开(公告)号：US07187756B2

公开(公告)日：2007-03-06

申请号：US10924111

申请日：2004-08-23

Applicant: Makoto Gohno ,  Akira Hagiwara

Inventor： Makoto Gohno ,  Akira Hagiwara

IPC: H01J35/10

CPC classification number: A61B6/405 ,  A61B6/032 ,  A61B6/4028 ,  A61B6/4035 ,  A61B6/482 ,  G01N23/046 ,  G01N2223/419 ,  H01J35/10 ,  H01J35/14 ,  H01J2235/086

Abstract: An X-ray CT apparatus capable of imaging a subject based on X-rays of multiple energy levels while using an ordinary X-ray detector includes an X-ray tube which generates X-rays from multiple focal points of different 3-dimensional positions sequentially on a time-division basis, a plurality of filters which implement the filtering individually for the X-rays generated individually from the focal points, a collimator which equalizes the irradiation range of the X-rays generated individually from the focal points, collection means which collects projection data of multiple views of a subject of imaging for the X-rays generated individually from the focal points, and reconstruction means which reconstructs an image based on the projection data. The anode of the X-ray tube has multiple impingement portions where electrons released by the cathode impinge at multiple positions on the trajectory of electrons sequentially on a time-division basis.

Abstract translation: 在使用普通X射线检测器的情况下，能够基于多个能级的X射线成像被检体的X射线CT装置包括从不同的3维位置的多个焦点依次产生X射线的X射线管 在时分的基础上，对从焦点分别生成的X射线分别进行滤波的多个滤波器，使来自焦点单独产生的X射线的照射范围相等的准直仪，收集装置， 收集从焦点单独产生的X射线的成像对象的多个视图的投影数据，以及基于投影数据重建图像的重建装置。 X射线管的阳极具有多个冲击部分，其中由阴极释放的电子在时间基础上依次冲击电子轨迹上的多个位置。

公开(公告)号：US20070041504A1

公开(公告)日：2007-02-22

申请号：US11161778

申请日：2005-08-16

Applicant: Ron Hockersmith ,  Michael Hebert

Inventor： Ron Hockersmith ,  Michael Hebert

IPC: H01J35/10

CPC classification number: H01J35/101 ,  H01J2235/083 ,  H01J2235/086 ,  H01J2235/1013 ,  H01J2235/1295

Abstract: An x-ray target assembly is provided comprising a center hub element affixed to a drive shaft and an outer disc including a plurality of tab extensions removably engaging the periphery of the center hub element. A target element is mounted on an upper outer disc surface.

Abstract translation: 提供了一种X射线靶组件，其包括固定到驱动轴的中心轮毂元件和包括可拆卸地接合中心轮毂元件的周边的多个翼片延伸部的外盘。 目标元件安装在上外盘表面上。

公开(公告)号：US20060269047A1

公开(公告)日：2006-11-30

申请号：US11497252

申请日：2006-08-02

Applicant: Hendrik Hamann ,  Yves Martin ,  Theodore van Kessel ,  Hemantha Wickramasinghe

Inventor： Hendrik Hamann ,  Yves Martin ,  Theodore van Kessel ,  Hemantha Wickramasinghe

IPC: H05G2/00 ,  G21G4/00 ,  H01J35/00

CPC classification number: H01J35/08 ,  G21K7/00 ,  H01J2235/083 ,  H01J2235/086

Abstract: A device for generating an x-ray point source includes a target, and an electron source for producing electrons which intersect with the target to generate an x-ray point source having a size which is confined by a dimension of the target.

公开(公告)号：US20060133576A1

公开(公告)日：2006-06-22

申请号：US11344790

申请日：2006-01-31

Applicant: Stephen Wilkins ,  Peter Miller

Inventor： Stephen Wilkins ,  Peter Miller

IPC: H01J35/08

CPC classification number: H01J35/12 ,  G21K7/00 ,  G21K2207/005 ,  H01J35/08 ,  H01J2235/086 ,  H01J2235/088 ,  H01J2235/1204 ,  H05H6/00

Abstract: X-ray generation apparatus including an elongated target body and a mount from which the body projects to a tip remote from the mount. The target body includes a substance that, on being irradiated by a beam of electrons of suitable energy directed onto the target body from laterally of the elongate target body, generates a source of x-ray radiation from a volume of interaction of the electron beam with the target body. The mount provides a heat sink for the target body.

公开(公告)号：US07012989B2

公开(公告)日：2006-03-14

申请号：US10655485

申请日：2003-09-03

Applicant: William P. Holland ,  Timothy Holland ,  Joseph Suffredini

Inventor： William P. Holland ,  Timothy Holland ,  Joseph Suffredini

IPC: H01J35/10

CPC classification number: H01J35/26 ,  H01J35/10 ,  H01J35/14 ,  H01J2235/086

Abstract: An X-ray tube has a metal-ceramic envelope having rotatably mounted therein an anode disk, which may be axially translatable and provided with a peripheral rim surface wherein a focal track spiral groove (or multiple annular grooves) is disposed. The groove(s) include a focal spot(s) area spaced from an electron emitting cathode(s), which is associated with a beam-forming structure and an X-ray transparent window mounted within an insulating structure aligned with the focal spot area. The insulating structure incorporates a multiplicity of imbedded annular electrodes which control an accelerating electric field, and which are structurally and operationally integrated into a power-control assembly that provides the electrical power and control signals necessary for the functioning of the X-ray tube.

Abstract translation: X射线管具有可旋转地安装在其中的阳极盘的金属陶瓷壳体，阳极盘可以轴向平移并且设置有外围边缘表面，其中设置有焦点轨道螺旋槽（或多个环形槽）。 凹槽包括与电子发射阴极隔开的焦斑区域，其与波束形成结构相关联，并且安装在与焦点区域对准的绝缘结构内的X射线透明窗口 。 绝缘结构包含多个嵌入式环形电极，其控制加速电场，并且其结构和操作地集成到功率控制组件中，该功率控制组件提供用于X射线管的功能所需的电功率和控制信号。

公开(公告)号：US06983035B2

公开(公告)日：2006-01-03

申请号：US10669613

申请日：2003-09-24

Applicant: John Scott Price ,  Wayne Frederick Block ,  Mark Vermilyea

Inventor： John Scott Price ,  Wayne Frederick Block ,  Mark Vermilyea

IPC: H01J35/08

CPC classification number: H01J35/08 ,  H01J35/14 ,  H01J2235/086

Abstract: Systems and methods for obtaining multi-slice images having a total thickness of up to about 160 mm or more in a single gantry rotation in computed tomography or volume computed tomography are described. One embodiment comprises an extended, multi-spot x-ray source for computed tomography or volume computed tomography imaging, comprising: an electron gun capable of producing a plurality of electron beams, each electron beam focused at a predetermined distance and aimed in a predetermined direction; and a plurality of targets positioned to receive the electron beams and generate x-rays in response thereto, each target comprising a predetermined focal spot thereon, wherein each electron beam is synchronized to strike, at an appropriate time, a predetermined target comprising a predetermined focal spot thereon.

Abstract translation: 描述了用于在计算机断层摄影或体积计算机断层摄影中在单个机架旋转中获得具有高达约160mm或更大的总厚度的多层图像的系统和方法。 一个实施例包括用于计算机断层摄影或体积计算机断层摄影成像的扩展的多点x射线源，包括：能够产生多个电子束的电子枪，每个电子束以预定距离聚焦并且朝向预定方向 ; 以及多个靶，其定位成接收电子束并响应于此产生x射线，每个靶包括其上的预定焦点，其中每个电子束被同步，以在合适的时间触发包括预定焦点的预定目标 点上

公开(公告)号：US06947522B2

公开(公告)日：2005-09-20

申请号：US10248153

申请日：2002-12-20

Applicant: Colin Wilson ,  Mark Vermilyea ,  James E. Simpson

Inventor： Colin Wilson ,  Mark Vermilyea ,  James E. Simpson

IPC: H01J35/10 ,  H01J35/26

CPC classification number: H01J35/10 ,  H01J2235/086

Abstract: An x-ray source with an x-ray source target are provided. The x-ray source includes an electron source. The x-ray source also includes an x-ray transmission window. The x-ray source also includes an x-ray source target located between the electron source and the window, wherein the target is arranged to receive electrons from the electron source to generate x-rays in the x-ray source target, and a rotational mechanism adapted to rotate the x-ray source target. A method of producing x-rays and an x-ray target are also provided.

Abstract translation: 提供具有x射线源目标的X射线源。 x射线源包括电子源。 x射线源还包括x射线透射窗口。 x射线源还包括位于电子源和窗口之间的x射线源靶，其中靶被设置成从电子源接收电子以在x射线源靶中产生x射线，并且旋转 适于旋转x射线源靶的机构。 还提供了一种产生x射线和x射线靶的方法。

公开(公告)号：US06595821B2

公开(公告)日：2003-07-22

申请号：US09838289

申请日：2001-04-20

Applicant: Masayuki Itoh ,  Koji Asahi ,  Mitsuo Osada ,  Yoshinari Amano ,  Tomohiro Takida

Inventor： Masayuki Itoh ,  Koji Asahi ,  Mitsuo Osada ,  Yoshinari Amano ,  Tomohiro Takida

IPC: H01J900

CPC classification number: H01J35/10 ,  H01J2235/081 ,  H01J2235/085 ,  H01J2235/086

Abstract: A high-quality and high-reliability rotary anode target for X-ray tubes, of which the mechanical strength at high temperatures is increased and which is applicable not only to low-speed rotation (at least 3,000 rpm) but also even to high-speed rotation at high temperatures, and also a method for producing it. The rotary anode has a two-layered structure to be formed by laminating an Mo alloy substrate that comprises from 0.2% by weight to 1.5% by weight of TiC with the balance of substantially Mo, and an X-ray generating layer of a W—Re alloy that overlies the substrate.

Abstract translation: 用于X射线管的高质量和高可靠性的旋转阳极靶，其中高温下的机械强度增加，并且不仅适用于低速旋转（至少3,000rpm），而且还适用于高温 高温下的高速旋转，以及其制造方法。 旋转阳极具有通过层压包含0.2重量％至1.5重量％的TiC，余量基本上为Mo的Mo合金基材和W-X系的X射线产生层而形成的双层结构， 覆盖衬底的Re合金。

公开(公告)号：US6163593A

公开(公告)日：2000-12-19

申请号：US138106

申请日：1998-08-21

Applicant: Thomas Koller ,  Rajesh Bhandari ,  Scott Coles ,  Wayne Truong ,  Jeffrey Takenaka

Inventor： Thomas Koller ,  Rajesh Bhandari ,  Scott Coles ,  Wayne Truong ,  Jeffrey Takenaka

IPC: H01J35/10

CPC classification number: H01J35/10 ,  H01J2235/086

Abstract: A method and apparatus for reducing off-focus radiation by modifying a shape of a rotating target anode disposed within a cathode grounded x-ray tube. The shape of the target anode body is modified such that surfaces of the target anode which could otherwise direct the greatest amounts of off-focus radiation toward an x-ray sensitive imaging device are angled or shortened so as to redirect the off-focus radiation away from a focal direction. These modifications to surfaces of the target anode body include modifying a front surface, a side or edge surface, and a back surface.

Abstract translation: 一种通过改变设置在阴极接地的X射线管内的旋转靶阳极的形状来减少离焦辐射的方法和装置。 目标阳极体的形状被修改为使得否则将靶向阳极的朝向X射线敏感成像装置引导最大量的偏心辐射的表面成角度或缩短，以便将离焦辐射转向远离 从焦点方向。 对目标阳极体的表面的这些修改包括改变前表面，侧面或边缘表面以及后表面。

公开(公告)号：US5615279A

公开(公告)日：1997-03-25

申请号：US332090

申请日：1994-11-01

Applicant: Tomonori Yoshioka ,  Shinichi Migita ,  Tetsuo Nakazawa

Inventor： Tomonori Yoshioka ,  Shinichi Migita ,  Tetsuo Nakazawa

IPC: G01N23/04 ,  A61B6/03 ,  G06T11/00 ,  G06K9/36

CPC classification number: H01J35/14 ,  A61B6/583 ,  G06T11/005 ,  H01J2235/086

Abstract: In a scattered X-ray correction method for an X-ray computerized tomograph, the quantity of X-rays passed through a phantom is measured to be converted into logarithms. Obtained from the logarithmic data is a scattered X-ray correction curve representing a relationship between the measured data in the logarithmic expression and an amount of scattered X-ray correction. For a subject, the quantity of X-rays penetrated therethrough is measured to be transformed into logarithms. From the measured data undergone the logarithmic conversion and the scattered X-ray correction curve, there is attained a scattered X-ray correction amount in a linear region which is the state before the logarithmic conversion. The measured data of the subject in the logarithmic expression is subjected to an inverse logarithmic conversion. From the obtained values, the scattered X-ray correction amount is subtracted such that the resultant values are again converted into logarithms, thereby producing a computerized tomogram from the logarithmic values.

Abstract translation: 在X射线计算机断层摄影机的散射X射线校正方法中，测量通过体模X射线的量被转换成对数。 从对数数据获得的散射X射线校正曲线表示对数表达式中的测量数据与散射X射线校正量之间的关系。 对于受试者，穿过其中的X射线的量被测量以被转换成对数。 从经过对数转换和散射X射线校正曲线的测量数据，在对数转换之前的状态的线性区域中获得散射X射线校正量。 以对数表达式对象的测量数据进行逆对数转换。 从获得的值中减去散射X射线校正量，使得所得到的值再次转换成对数，从而从对数值产生计算机断层图像。