公开(公告)号：US07729474B2

公开(公告)日：2010-06-01

申请号：US11887515

申请日：2006-01-27

Applicant: Yoshiaki Ito ,  Shinzo Yoshikado ,  Toru Nakamura ,  Yoshikazu Nakanishi

Inventor： Yoshiaki Ito ,  Shinzo Yoshikado ,  Toru Nakamura ,  Yoshikazu Nakanishi

IPC: G21G4/00 ,  H01J35/00

CPC classification number: H05G2/00 ,  H01J35/025 ,  H01J35/04 ,  H01J35/06 ,  H01J35/14 ,  H01J35/32

Abstract: An X-ray generator uses a high electrical field generated when a hemimorphic crystal is heated or cooled. The crystal may be lithium niobate polarized in one direction. An X-ray target is placed inside a housing inside which a vacuum is maintained. A tungsten line containing thorium is placed between the crystal and the target. When the crystal is heated or cooled by a Pelletier element, an intense electrical field is generated around the crystal. Thermoelectrons released from the tungsten line accelerate as a result of the electrical field and collide with the X-ray target. The X-rays released at this time radiate through a beryllium window exteriorly of the housing. Intense X-rays are generated without using large scale equipment, such as a high voltage power source.

Abstract translation: X射线发生器使用当加热或冷却半晶体晶体时产生的高电场。 晶体可以是在一个方向上极化的铌酸锂。 将X射线靶放置在保持真空的壳体内。 含有钍的钨线置于晶体和靶之间。 当晶体被Pelletier元件加热或冷却时，晶体周围产生强烈的电场。 从钨线释放的热电子由于电场而加速，并与X射线靶碰撞。 此时释放的X射线通过外壳外部的铍窗放射。 在不使用诸如高压电源的大型设备的情况下产生强烈的X射线。

公开(公告)号：US20090161830A1

公开(公告)日：2009-06-25

申请号：US12089086

申请日：2006-10-03

Applicant: Tutomu Inazuru

Inventor： Tutomu Inazuru

IPC: H01J35/14

CPC classification number: H01J35/18 ,  H01J35/04 ,  H01J35/14 ,  H01J2235/163 ,  H01J2235/18

Abstract: The present invention relates to an X-ray tube, having a structure for realizing improvement of a magnification factor of a magnified transmission image, and an X-ray source that includes the X-ray tube. The X-ray tube includes: a target housing unit, housing an X-ray target; and an electron gun housing unit, one end of which is mounted to a side wall portion of the target housing unit. The electron gun housing unit is disposed so that a tube axis thereof intersects a tube axis of the target housing unit. The electron gun housing unit holds an electron gun while a center of an electron emission exit of the electron gun is shifted more toward an X-ray emission window side, disposed at one end of the side wall portion of the target housing unit, than the tube axis of the electron gun housing unit. By this configuration, a distance (FOD) between the X-ray emission window and the X-ray target can be shortened while maintaining an adequate electron gun output.

Abstract translation: 本发明涉及一种具有用于实现放大透射图像的放大倍数的提高的结构的X射线管和包括该X射线管的X射线源。 X射线管包括：目标壳体单元，容纳X射线靶; 以及电子枪容纳单元，其一端安装在目标容纳单元的侧壁部分上。 电子枪容纳单元设置成使其管轴与目标容纳单元的管轴相交。 电子枪外壳单元保持电子枪，同时电子枪的电子发射出口的中心更靠近设置在目标壳体单元的侧壁部分的一端的X射线发射窗侧偏移 电子枪壳体单元的管轴。 通过这种构造，可以在保持足够的电子枪输出的同时缩短X射线发射窗与X射线靶之间的距离（FOD）。

公开(公告)号：US20090041194A1

公开(公告)日：2009-02-12

申请号：US11887515

申请日：2006-01-27

Applicant: Yoshiaki Ito ,  Shinzo Yoshikado ,  Toru Nakamura ,  Yoshikazu Nakanishi

Inventor： Yoshiaki Ito ,  Shinzo Yoshikado ,  Toru Nakamura ,  Yoshikazu Nakanishi

IPC: H01J35/06 ,  H01J35/10

CPC classification number: H05G2/00 ,  H01J35/025 ,  H01J35/04 ,  H01J35/06 ,  H01J35/14 ,  H01J35/32

Abstract: An X-ray generator uses a high electrical field generated when a hemimorphic crystal is heated or cooled. The crystal may be lithium niobate polarized in one direction. An X-ray target is placed inside a housing inside which a vacuum is maintained. A tungsten line containing thorium is placed between the crystal and the target. When the crystal is heated or cooled by a Pelletier element, an intense electrical field is generated around the crystal. Thermoelectrons released from the tungsten line accelerate as a result of the electrical field and collide with the X-ray target. The X-rays released at this time radiate through a beryllium window exteriorly of the housing. Intense X-rays are generated without using large scale equipment, such as a high voltage power source.

Abstract translation: X射线发生器使用当加热或冷却半晶体晶体时产生的高电场。 晶体可以是在一个方向上极化的铌酸锂。 将X射线靶放置在保持真空的壳体内。 含有钍的钨线置于晶体和靶之间。 当晶体被Pelletier元件加热或冷却时，在晶体周围产生强烈的电场。 从钨线释放的热电子由于电场而加速，并与X射线靶碰撞。 此时释放的X射线通过外壳外部的铍窗放射。 在不使用诸如高压电源的大型设备的情况下产生强烈的X射线。

公开(公告)号：US20080144774A1

公开(公告)日：2008-06-19

申请号：US10554654

申请日：2004-04-23

Applicant: Edward James Mortor ,  Russell David Luggar ,  Paul De Antonis

Inventor： Edward James Mortor ,  Russell David Luggar ,  Paul De Antonis

IPC: H01J35/30

CPC classification number: H01J35/04 ,  H01J35/08 ,  H01J2235/086 ,  H01J2235/087 ,  H01J2235/12 ,  H01J2235/168

Abstract: An X-ray tube comprises an electron source in the form of a cathodE (12), and an anode (14) within a housing (10). The anode (14) is a thin film anode, so that most of the electrons which do not interact with it to produce X-rays pass directly through it. X-rays can be collected through a first window (16) directly behind the anode (14), or a second window (18) to one side of the anode. A retardation electrode 20 is located behind the anode 4 and is held at a potential which is negative with respect to the anode 14, and slightly positive with respect to the cathode (12). This retardation electrode (20) produces an electric field which slows down electrons passing through the anode (14) so that, when they interact with it, they are at relatively low energies. This reduces the heat load on the tube.

Abstract translation: X射线管包括阴极E（12）形式的电子源和在壳体（10）内的阳极（14）。 阳极（14）是薄膜阳极，使得与其不相互作用以产生X射线的大多数电子直接通过它。 可以通过阳极（14）正后方的第一窗口（16）或阳极一侧的第二窗口（18）来收集X射线。 延迟电极20位于阳极4的后面并且被保持在相对于阳极14为负的电位，并且相对于阴极（12）稍微为正。 该延迟电极（20）产生电场，其减慢通过阳极（14）的电子，使得当它们与其相互作用时，它们处于相对低的能量。 这减少了管上的热负荷。

公开(公告)号：US20070121788A1

公开(公告)日：2007-05-31

申请号：US10581542

申请日：2003-12-02

Applicant: Mark Mildner ,  Kurt Holm

Inventor： Mark Mildner ,  Kurt Holm

IPC: H01J35/14

CPC classification number: H01J35/04

Abstract: Modular X-ray tube (10) and method for the production of such an X-ray tube, in which an anode (20) and a cathode (30) are arranged in a vacuumized inner space (40) situated opposite each other, electrons (e−) being produced at the cathode (30) and X-rays (y) at the anode (20). The X-ray tube (10) according to the invention comprises a multiplicity of acceleration modules (41, . . . , 45), complementing one another, and each acceleration module (41, . . . , 45) comprises at least one potential-carrying acceleration electrode (20/30/423/433/443). A first acceleration module (41) thereby comprises the cathode (30), a second acceleration module (45) the anode (20). The X-ray tube (10) further comprises at least one other acceleration module (42, . . . , 44). In particular, the X-ray tube according to the invention can possess a re-closeable vacuum valve, enabling individual defective parts of the tube (10) to be replaced in a simple manner or enabling the tube (10) to be modified in a modular way.

Abstract translation: 模块化X射线管（10）以及用于生产这样的X射线管的方法，其中阳极（20）和阴极（30）布置在彼此相对的真空内部空间（40）中，电子 在阴极（30）处产生的（e - SUP）和在阳极（20）处的X射线（y）。 根据本发明的X射线管（10）包括多个彼此互补的加速模块（41 ...，45），并且每个加速模块（41 ...，45）包括至少一个电位 加载电极（20/30/423/433/443）。 第一加速模块（41）由此包括阴极（30），第二加速模块（45），阳极（20）。 X射线管（10）还包括至少一个其它加速模块（42，...，44）。 特别地，根据本发明的X射线管可以具有可再闭合的真空阀，使得可以简单地更换管（10）的各个有缺陷的部件，或使管（10）能够 模块化方式。

公开(公告)号：US06807248B2

公开(公告)日：2004-10-19

申请号：US10302835

申请日：2002-11-25

Applicant: Kazumasa Mihara ,  Susumu Urano ,  Keiichi Hori ,  Shin Ogura

Inventor： Kazumasa Mihara ,  Susumu Urano ,  Keiichi Hori ,  Shin Ogura

IPC: H05G160

CPC classification number: A61B6/032 ,  A61B6/4028 ,  A61B6/4488 ,  H01J35/025 ,  H01J35/04 ,  H01J35/08 ,  H01J2235/16

Abstract: A multisource type X-ray CT apparatus including a fixed sensor array, a fixed vacuum chamber, and an X-ray generation unit. The X-ray generation unit includes a cathode and an anode which are fixed in the vacuum chamber so as to surround the sensor array, a gate array including a plurality of grid electrodes which are densely fixed between the cathode and anode and which include holes for passing the electron beams, a power source which applies a bias voltage to the grid electrodes of the gate array, and a controller which controls the power supply operation from the power source so as to select the grid electrode suitable for image pickup from the gate array in accordance with an image pickup portion of the subject and to release the bias voltage applied to the selected grid electrode.

Abstract translation: 一种包括固定传感器阵列，固定真空室和X射线产生单元的多源X射线CT装置。 X射线产生单元包括阴极和阳极，其固定在真空室中以包围传感器阵列;门阵列，包括密集地固定在阴极和阳极之间的多个栅极，并且包括孔， 使电子束通过，向栅极阵列的栅格电极施加偏置电压的电源;以及控制器，其控制来自电源的电源操作，以便选择适合于从门阵列进行图像拾取的栅电极 根据被摄体的图像拾取部分，并且释放施加到所选择的栅电极的偏置电压。

公开(公告)号：US06198804B1

公开(公告)日：2001-03-06

申请号：US09526245

申请日：2000-03-15

Applicant: Mark Dinsmore

Inventor： Mark Dinsmore

IPC: H01S3506

CPC classification number: A61N5/1001 ,  H01J35/04 ,  H05G2/00 ,  H05H15/00

Abstract: A modular multistage accelerator for use in an X-ray treatment system includes a first 10 kV acceleration stage which houses an electron beam gun supplied with −50 kV of voltage. The modular multi-stage accelerator includes four additional 10 kV stages placed in series with the first stage to achieve a 50 kV accelerator overall. Each stage is shielded to prevent stray electrons from being propagated along the length of the drift tube. The triple point within each modular stage is recessed to significantly reduce the emission of stray electrons within each stage. Additionally, the beam current at the X-ray emitting probe of the X-ray source is measured by isolating the beam current to a beam current measuring circuit in electrical connection with a nulling junction node, wherein other currents within the circuit are nulled at the nulling junction node and the beam current flows to the beam current measuring circuit.

Abstract translation: 用于X射线处理系统的模块化多级加速器包括容纳-50kV电压的电子束枪的第一10kV加速阶段。 模块化多级加速器包括与第一级串联放置的四个额外的10kV级，以实现整个50kV加速器。 屏蔽每一级以防止杂散电子沿漂移管的长度传播。 每个模块化阶段的三重点是凹陷的，以显着减少每个阶段内的杂散电子的发射。 另外，X射线源的X射线探测器处的射束电流是通过将射束电流隔离到与归零结节点电连接的束电流测量电路来测量的，其中电路内的其它电流在 零接点和射束电流流向束电流测量电路。

公开(公告)号：US6111932A

公开(公告)日：2000-08-29

申请号：US211144

申请日：1998-12-14

Applicant: Mark Dinsmore

Inventor： Mark Dinsmore

IPC: G21K5/02 ,  A61N5/10 ,  H01J35/04 ,  H01J35/14 ,  H05G2/00 ,  H05H15/00 ,  H01J35/06

CPC classification number: A61N5/1001 ,  H01J35/04 ,  H05G2/00 ,  H05H15/00

Abstract: A modular multistage accelerator (102) for use in an X-ray treatment system includes a first 10 kV acceleration stage (120) which houses an electron beam gun supplied with -50 kV of voltage. The modular multi-stage accelerator includes four additional 10 kV stages (112,114,116,118) placed in series with the first stage to achieve a 50 kV accelerator overall. Each stage is shielded (190) to prevent stray electrons from being propagated along the length of the drift tube. The triple point within each modular stage is recessed to significantly reduce the emission of stray electrons within each stage. Additionally, the beam current at the X-ray emitting probe of the X-ray source is measured by isolating the beam current to a beam current measuring circuit (220) in electrical connection with a nulling junction node, wherein other currents within the circuit are nulled at the nulling junction node and the beam current flows to the beam current measuring circuit.

Abstract translation: 用于X射线处理系统的模块化多级加速器（102）包括容纳-50kV电压的电子束枪的第一10kV加速级（120）。 模块化多级加速器包括与第一级串联放置的四个额外的10kV级（112,114,116,118），以实现整个50kV加速器。 每个级被屏蔽（190），以防止杂散电子沿漂移管的长度传播。 每个模块化阶段的三重点是凹陷的，以显着减少每个阶段内的杂散电子的发射。 另外，X射线源的X射线发射探针处的束电流是通过将束电流隔离到与归零结节点电连接的束电流测量电路（220）来测量的，其中电路内的其它电流是 在零接点处为零，并且束电流流向光束电流测量电路。

公开(公告)号：US5563923A

公开(公告)日：1996-10-08

申请号：US429130

申请日：1995-04-26

Applicant: Tomoyuki Okada ,  Masuo Ito ,  Tsutomu Nakamura ,  Mitsumasa Furukawa

Inventor： Tomoyuki Okada ,  Masuo Ito ,  Tsutomu Nakamura ,  Mitsumasa Furukawa

IPC: H01J35/04 ,  H01J35/08 ,  H01J35/14

CPC classification number: H01J35/14 ,  H01J35/04

Abstract: An x-ray tube 100 mainly includes an electron gun assembly 110 and a target assembly 210 which are arranged at right angles. In the target assembly 210, an x-ray target 211 is enclosed in a cylindrically-shaped hood electrode 212. Electrons emitted from the electron gun assembly 110 enters the hood electrode through an electron beam opening 215 to collide with the x-ray target 212, whereupon x-rays are generated. X-rays travel in an x-ray emitting direction R along the central axis of the hood electrode to emit outside of the hood electrode through an x-ray opening 216. A protrusion 212a is formed on the periphery of the hood electrode 212 downstream of the electron opening 215 in the x-ray emitting direction R.

Abstract translation: X射线管100主要包括以直角布置的电子枪组件110和靶组件210。 在目标组件210中，x射线靶211被封闭在圆柱形罩电极212中。从电子枪组件110发射的电子通过电子束开口215进入发动机罩电极以与X射线靶212碰撞 从而产生x射线。 X射线沿着发动机罩电极的中心轴线在x射线发射方向R上行进，通过X射线开口216发射到罩电极外部。突起212a形成在罩电极212的周围， x射线发射方向R上的电子开口215。

公开(公告)号：US5193105A

公开(公告)日：1993-03-09

申请号：US809924

申请日：1991-12-18

Applicant: Roy E. Rand ,  Eugene Y. Tsiang

Inventor： Roy E. Rand ,  Eugene Y. Tsiang

IPC: H01J35/04

CPC classification number: H01J35/04

Abstract: An electron beam scanning system employing a relatively short housing chamber wherein an electron beam is produced includes an ion controlling electrode assembly. Located in the housing between the electron gun and system beam optics, the assembly includes a generally cone-shaped rotating field ion controlling electrode (or "RICE") unit comprising cylindrically symmetrical element pairs disposed on opposite sides of the housing Z-axis. Preferably equal and opposite potential sources coupled to elements comprising an element pair create a transverse electric field therebetween. The vector sum of the fields produced by all element pairs is the transverse field created by the RICE unit. The potentials are varied, rotating the overall RICE field to controllably remove most but not all positive ions. The remaining ions improve the electron beam space-charge density, resulting in a sharply focused scanning electron beam. Preferably a disk-like positive ion electrode (or "PIE") unit coupled to a large positive potential is disposed downstream from the RICE unit to block upstream migration of positive ions. Where discontinuities are present in the housing, a periodic axial field ion controlling electrode (or "PICE") unit is disposed at the upstream end of the overall assembly. The PICE comprises spaced-apart disks alternately coupled to large and small potentials to create alternating axial fields within a short axial distance, to rapidly sweep away ions. Regions within the overall assembly not otherwise acted upon by fields are covered with one or more conventional ICE units to sweep away positive ions.

Abstract translation: 采用其中产生电子束的相对较短的壳体室的电子束扫描系统包括离子控制电极组件。 位于电子枪和系统光束光学器件之间的壳体中，组件包括大致锥形的旋转场离子控制电极（或“RICE”）单元，其包括设置在壳体Z轴的相对侧上的圆柱对称元件对。 优选地，耦合到包括元件对的元件的相等和相反的电位源在它们之间产生横向电场。 由所有元素对产生的场的矢量和是由RICE单元创建的横向场。 电位变化，旋转整个RICE领域可控制地去除大部分但不是全部的正离子。 剩余的离子可以改善电子束的空间电荷密度，从而产生清晰的扫描电子束。 优选地，耦合到大正电位的盘状正离子电极（或“PIE”）单元设置在RICE单元的下游以阻止正离子的上游迁移。 在壳体中存在不连续性的情况下，周期性轴向场离子控制电极（或“PICE”）单元设置在整个组件的上游端。 PICE包括交替地耦合到大的和小的电位的间隔开的盘，以在短的轴向距离内产生交替的轴向场，以快速地扫除离子。 整个组件内的区域不是由场所影响的区域被一个或多个常规的ICE单元覆盖以扫除正离子。