公开(公告)号：US5978438A

公开(公告)日：1999-11-02

申请号：US992866

申请日：1997-12-12

Applicant: Theodore A. Resnick ,  David A. Wilcox ,  Rodney A. Mattson

Inventor： Theodore A. Resnick ,  David A. Wilcox ,  Rodney A. Mattson

IPC: A61B6/00 ,  A61B6/03 ,  H05G1/60

CPC classification number: A61B6/56 ,  A61B6/032 ,  A61B6/4021

Abstract: A radiographic scanner (10) has a stationary gantry portion (12) defining a subject receiving region (16) and a rotating gantry portion (20) on which an imaging x-ray tube (22) is mounted. The rotating gantry portion (20) is rotatably mounted to the stationary gantry portion (12) for rotation about the subject receiving region (16). A slip ring assembly extending around the subject receiving region (16) connected with the stationary and rotating gantry portions, includes a scintillating optical fiber (44) mounted around the patient receiving region (16) to one of the rotating and stationary gantry portions. A communication x-ray tube (40) is mounted to the other gantry portion and directed such that radiation therefrom enters the scintillating optical fiber (44) from a lateral direction. The scintillating optical fiber (44) converts the incident x-rays (52) to light (58) and transmits the light (58) along its longitudinal axis. The scintillating optical fiber (44) is enclosed in a protective sheathing (50) that is opaque to optical radiation which protects the fiber from damage and eliminates noise, inaccuracy, and false signals caused by ambient and stray light entering the fiber.

Abstract translation: 射线照相扫描器（10）具有限定被摄体接收区域（16）的固定台架部分（12）和安装成像X射线管（22）的旋转台架部分（20）。 旋转机架部分（20）可旋转地安装到固定机架部分（12）上，用于围绕对象接收区域（16）旋转。 围绕与固定和旋转台架部分连接的被摄体接收区域（16）延伸的滑环组件包括安装在患者接收区域（16）周围的旋转和静止机架部分之一中的闪烁光纤（44）。 通信X射线管（40）安装到另一台架部分并被引导使得其从其横向方向进入闪烁光纤（44）。 闪烁光纤（44）将入射的X射线（52）转换成光（58），并沿其纵向轴线透射光（58）。 闪烁光纤（44）封装在对光辐射不透明的保护性护套（50）中，保护光纤免受损坏，并消除由环境和杂散光进入光纤引起的噪声，不精确和假信号。

公开(公告)号：US06215842B1

公开(公告)日：2001-04-10

申请号：US09132800

申请日：1998-08-13

Applicant: Theodore A. Resnick ,  Rodney A. Mattson

Inventor： Theodore A. Resnick ,  Rodney A. Mattson

IPC: H05G134

CPC classification number: H05G1/32

Abstract: An x-ray radiation stabilization system is provided including an x-ray tube (20) which emits x-ray radiation (22). The x-ray tube (20) has an anode (52), a cathode (50), and a vacuum envelope (54) which houses the anode (52) and the cathode (50). A high-voltage generator (40) is connected to the x-ray tube (20). It supplies a high-voltage electric potential between the cathode (50) and anode (52) such that an electron beam flows therebetween. The electron beam strikes the anode (52) producing the x-ray radiation (22). A reference radiation detector (60) samples a representative portion of the x-ray radiation (22) emitted by the x-ray tube (20) and generates an error signal in response to an intensity of the sampled x-ray radiation (22). A feedback circuit (80) is connected between the reference radiation detector (60) and the high-voltage generator (40). The feedback circuit (80) processes the error signal and in response thereto directs the high-voltage generator (40) to adjust the high-voltage electric potential supplied to the x-ray tube (20) so that in the x-ray radiation (22) ripple having a predetermined frequency range is substantially canceled.

Abstract translation: 提供了包括发射x射线辐射（22）的X射线管（20）的X射线辐射稳定系统。 x射线管（20）具有阳极（52），阴极（50）和容纳阳极（52）和阴极（50）的真空外壳（54）。 高压发生器（40）连接到X射线管（20）。 它在阴极（50）和阳极（52）之间提供高电压电位，使得电子束在它们之间流动。 电子束撞击产生X射线辐射（22）的阳极（52）。 参考辐射检测器（60）对由X射线管（20）发射的X射线辐射（22）的代表部分进行采样，并响应于采样的X射线辐射（22）的强度产生误差信号， 。 在参考辐射检测器（60）和高压发生器（40）之间连接反馈电路（80）。 反馈电路（80）处理该误差信号，并响应于此引导高电压发生器（40）调节提供给X射线管（20）的高压电位，使得在x射线辐射 22）具有预定频率范围的波动基本上被消除。

公开(公告)号：US5475729A

公开(公告)日：1995-12-12

申请号：US224958

申请日：1994-04-08

Applicant: Rodney A. Mattson ,  Theodore A. Resnick

Inventor： Rodney A. Mattson ,  Theodore A. Resnick

IPC: H05G1/02 ,  A61B6/00 ,  H01J35/24 ,  H05G1/04 ,  H05G1/26 ,  H05G1/32 ,  H05G1/64 ,  H01J35/04

CPC classification number: A61B6/4488 ,  A61B6/4028 ,  A61B6/56 ,  H01J35/24 ,  H05G1/04 ,  H05G1/26 ,  H05G1/32 ,  H05G1/64

Abstract: A toroidal x-ray tube (I) is supported and selectively positioned by a gantry (II). The x-ray tube includes a toroidal housing (A) in which a rotor (30) is rotatably mounted. One or more cathodes (C) are mounted on the rotor for generating an electron beam which strikes an anode (B) to generate a beam of x-rays which passes through a window (20) and strikes an annular ring of detectors (160). A grid bias control circuit (100) selectively applies a continuously adjustable bias to a grid (36) for regulating the electron current, hence the intensity of the x-ray beam. A scintillating optical fiber (110) extends around the exterior of the window. The scintillation optical fiber includes fluorescent dopant (116) which convert a very small fraction of the x-rays into optical light which is transmitted along the fibers to an opto-electric transducer (118). The opto-electric transducer is connected with the grid bias control circuit. The opto-electrical transducer (118) can also be connected with an intensity compensator (162) for adjusting the signals from the detector ring before they are reconstructed (164 ) into an image representation.

Abstract translation: 环形X射线管（I）由机架（II）支撑并选择性定位。 X射线管包括环形壳体（A），转子（30）可旋转地安装在壳体中。 一个或多个阴极（C）安装在转子上以产生撞击阳极（B）的电子束，以产生穿过窗口（20）并撞击检测器（160）的环形环的X射线束， 。 栅极偏置控制电路（100）选择性地向网格（36）施加连续可调的偏压，用于调节电子电流，因此调整X射线束的强度。 闪烁的光纤（110）围绕窗户的外部延伸。 闪烁光纤包括荧光掺杂剂（116），其将非常小部分的X射线转换成沿着光纤传输到光电换能器（118）的光学光。 光电传感器与电网偏置控制电路相连。 光电换能器（118）还可以与强度补偿器（162）连接，用于在将检测器环重建（164）之前将检测器环的信号调整成图像表示。

公开(公告)号：US5305363A

公开(公告)日：1994-04-19

申请号：US863182

申请日：1992-04-03

Applicant: James E. Burke ,  Lester Miller ,  Rodney A. Mattson ,  Carl J. Brunnett ,  Theodore A. Resnick

Inventor： James E. Burke ,  Lester Miller ,  Rodney A. Mattson ,  Carl J. Brunnett ,  Theodore A. Resnick

IPC: A61B6/00 ,  A61B6/03 ,  H01J35/02 ,  H01J35/06 ,  H01J35/10 ,  H01J35/16 ,  H01J35/24 ,  H05G1/06 ,  H05G1/08 ,  H05G1/20 ,  H05G1/26 ,  H05G1/34 ,  H05G1/52 ,  H05G1/60 ,  H05G1/66

CPC classification number: A61B6/035 ,  A61B6/032 ,  A61B6/4028 ,  A61B6/405 ,  A61B6/4275 ,  A61B6/4488 ,  A61B6/482 ,  A61B6/56 ,  H01J35/02 ,  H01J35/06 ,  H01J35/10 ,  H01J35/165 ,  H01J35/24 ,  H05G1/06 ,  H05G1/08 ,  H05G1/20 ,  H05G1/26 ,  H05G1/34 ,  H05G1/52 ,  H05G1/60 ,  H05G1/66 ,  H01J2235/162 ,  H05G1/025

Abstract: A toroidal x-ray tube (I) is supported (II) for rotation about a horizontal axis (170), translation along a vertical axis (172), and translation along a horizontal axis (174). The x-ray tube includes a toroidal housing (A), an annular anode (B), and a cathode (0) which rotates a beam of electrons around the annular anode. A plurality of parallel connected voltage sources (90.sub.1, 90.sub.2, . . . , 90.sub.n) provide a sufficiently high bias voltage between the electron source and the anode that x-rays are generated. The x-ray beam passes through a compensator crystal (62), an annular window (20), a collimator (132), through a subject received in a central bore (26) of the x-ray tube, and impacts an arc segment of radiation detectors (130). The x-ray detectors are stationarily mounted outside of the plane of the annular window (FIGS. 2 and 7), nutate into the plane of the windows opposite of the origin of the x-ray beam (FIG. 6 ), rotate in part (FIG. 9 ) or rotate in full (FIG. 8 ) Angular position monitors (58, 154) determine the angular position of the cathode assembly, hence the x-ray beam, and the angular position of the detectors in the rotating detector embodiment.

Abstract translation: 环形X射线管（I）被支撑（II），用于围绕水平轴线（170）旋转，沿着垂直轴线（172）平移并且沿着水平轴线（174）平移。 X射线管包括环形壳体（A），环形阳极（B）和使电子束围绕环形阳极旋转的阴极（0）。 多个并联的电压源（901,902，...，90n）在产生x射线的电子源和阳极之间提供足够高的偏置电压。 x射线束穿过受体在X射线管的中心孔（26）中的受试者通过补偿晶体（62），环形窗（20），准直器（132），并且撞击弧段 的辐射探测器（130）。 X射线检测器固定地安装在环形窗的平面外（图2和7），并且朝向与X射线束原点相反的窗口的平面（图6）中，部分旋转 （图9）或完全旋转（图8）角位置监视器（58,154）确定阴极组件的角度位置，因此确定旋转检测器实施例中的X射线束和检测器的角位置 。

公开(公告)号：US07873144B2

公开(公告)日：2011-01-18

申请号：US11721163

申请日：2005-12-05

Applicant: Randall P. Luhta ,  Marc A. Chappo ,  Brian E. Harwood ,  Rodney A. Mattson ,  Chris J. Vrettos

Inventor： Randall P. Luhta ,  Marc A. Chappo ,  Brian E. Harwood ,  Rodney A. Mattson ,  Chris J. Vrettos

IPC: H05G1/64

CPC classification number: A61B6/032 ,  A61B6/585 ,  G01T1/24

Abstract: A radiographic imaging apparatus (10) comprises a primary radiation source (14) which projects a beam of radiation into an examination region (16). A detector (18) converts detected radiation passing through the examination region (16) into electrical detector signals representative of the detected radiation. The detector (18) has at least one temporally changing characteristic such as an offset B(t) or gain A(t). A grid pulse means (64) turns the primary radiation source (14) ON and OFF at a rate between 1000 and 5000 pulses per second, such that at least the offset B(t) is re-measured between 1000 and 5000 times per second and corrected a plurality of times during generation of the detector signals. The gain A(t) is measured by pulsing a second pulsed source (86, 100, 138) of a constant intensity (XRef) with a second pulse means (88). The gain A(t) is re-measured and corrected a plurality of times per second during generation of the detector signals.

Abstract translation: 放射线照相成像装置（10）包括将辐射束投射到检查区域（16）中的主要辐射源（14）。 检测器（18）将通过检查区域（16）的检测到的辐射转换成代表检测到的辐射的电检测器信号。 检测器（18）具有至少一个时间上变化的特性，例如偏移B（t）或增益A（t）。 电网脉冲装置（64）以每秒1000至5000个脉冲之间的速率使主辐射源（14）接通和断开，使得至少偏移B（t）在每秒1000至5000次之间重新测量 并且在检测器信号的产生期间多次校正。 通过用第二脉冲装置（88）脉冲具有恒定强度（XRef）的第二脉冲源（86,100,138）来测量增益A（t）。 在检测器信号的产生期间，增益A（t）被重新测量和校正多次。

公开(公告)号：US07822173B2

公开(公告)日：2010-10-26

申请号：US12159861

申请日：2007-01-04

Applicant: Rodney A. Mattson ,  Marc A. Chappo ,  Randall P. Luhta

Inventor： Rodney A. Mattson ,  Marc A. Chappo ,  Randall P. Luhta

IPC: G01N23/00

CPC classification number: A61B6/585 ,  A61B6/032

Abstract: An ionizing radiation detector module (22) includes a detector array (200), a memory (202), signal processing electronics (208), a communications interface (210), and a connector (212). The memory contains detector performance parameters (204) and detector correction algorithms (206). The signal processing electronics (208) uses the detector performance parameters (204) to correct signals from the detector array (200) in accordance with the detector correction algorithms (206).

Abstract translation: 电离辐射检测器模块（22）包括检测器阵列（200），存储器（202），信号处理电子器件（208），通信接口（210）和连接器（212）。 存储器包含检测器性能参数（204）和检测器校正算法（206）。 信号处理电子设备（208）根据检测器校正算法（206）使用检测器性能参数（204）来校正来自检测器阵列（200）的信号。

公开(公告)号：US07573035B2

公开(公告)日：2009-08-11

申请号：US11577604

申请日：2005-10-12

Applicant: Simha Levene ,  Rodney A. Mattson ,  Ami Altman

Inventor： Simha Levene ,  Rodney A. Mattson ,  Ami Altman

IPC: G01T1/20

CPC classification number: G01T1/201 ,  G01T1/2985

Abstract: A radiation detector (24) for an imaging system includes a two-dimensional array (50) of nondeliquescent ceramic scintillating fibers or sheets (52). The scintillating fibers (52) are manufactured from a GOS ceramic material. Each scintillating fiber (52) has a width (d2) between 0.1 mm and 1 mm, a length (h2) between 0.1 mm and 2 mm and a height (h8) between 1 mm and 2 mm. Such scintillating fiber (52) has a height (h8) to cross-sectional dimension (d2, h2) ratio of approximately 10 to 1. The scintillating fibers (52) are held together by layers (86, 96) of a low index coating material. A two-dimensional array (32) of photodiodes (34) is positioned adjacent and in optical communication with the scintillating fibers (52) to convert the visible light into electrical signals. A grid (28) is disposed by the scintillating array (50). The grid (28) has the apertures (30) which correspond to a cross-section of the photodiodes (34) and determine a spatial resolution of the imaging system.

Abstract translation: 用于成像系统的放射线检测器（24）包括非柔性陶瓷闪烁纤维或片（52）的二维阵列（50）。 闪烁纤维（52）由GOS陶瓷材料制成。 每个闪烁光纤（52）具有在0.1mm和1mm之间的宽度（d2），在0.1mm和2mm之间的长度（h2）和在1mm和2mm之间的高度（h8）。 这种闪烁纤维（52）具有大约10比1的高度（h8）至横截面尺寸（d2，h2）比。闪烁纤维（52）通过低折射率涂层（86,96）保持在一起 材料。 光二极管（34）的二维阵列（32）被定位成与闪烁光纤（52）相邻并与之相通，以将可见光转换为电信号。 格栅（28）由闪烁阵列（50）设置。 栅格（28）具有对应于光电二极管（34）的横截面的孔（30）并且确定成像系统的空间分辨率。

公开(公告)号：US06542576B2

公开(公告)日：2003-04-01

申请号：US09766777

申请日：2001-01-22

Applicant: Rodney A. Mattson

Inventor： Rodney A. Mattson

IPC: H01J3500

CPC classification number: H01J35/26

Abstract: An x-ray tube assembly (16) includes a vacuum envelope (52) and an x-ray permeable exit window (58). An anode (50) is positioned within the vacuum envelope (52) such that a near side is adjacent to the exit window (58) and a far side is opposite thereof. A cathode assembly (66) is also mounted within the vacuum envelope (52) which directs an electron beam (72) toward a focal spot or point (62) on the far side of the anode (50). The anode further includes a central cavity or indentation (70) which provides a location for mounting a set of radiation attenuating vanes (64) in addition to a shaped x-ray filter or compensator (68). Close placement of the vanes (64) and the filter (68) relative to the focal spot of the anode desirably reduce off focal radiation and allow beam shaping. An externally located collimator (18) further shapes the output x-ray beam.

Abstract translation: X射线管组件（16）包括真空外壳（52）和x射线可透过的出射窗（58）。 阳极（50）位于真空封壳（52）内，使得近侧与出射窗（58）相邻，远侧与其相反。 阴极组件（66）也安装在真空外壳（52）内，真空外壳（52）将电子束（72）引向阳极（50）的远侧上的焦点或点（62）。 阳极还包括中心腔或凹口（70），除了成形的x射线滤波器或补偿器（68）之外，还提供用于安装一组辐射衰减叶片（64）的位置。 叶片（64）和过滤器（68）相对于阳极的焦点的紧密放置期望地减少了聚焦辐射，并允许光束成形。 外部定位的准直器（18）进一步使输出的X射线束成形。

公开(公告)号：US06426991B1

公开(公告)日：2002-07-30

申请号：US09714685

申请日：2000-11-16

Applicant: Rodney A. Mattson ,  Chris J. Vrettos

Inventor： Rodney A. Mattson ,  Chris J. Vrettos

IPC: A61B600

CPC classification number: H01L27/14661 ,  A61B6/032 ,  G01T1/2018

Abstract: A CT scanner (10) includes a reconstruction processor (32) for reconstructing an image from digital signals from detector arrays (20). Each detector array includes scintillation crystals (22) arranged in an array for converting x-ray radiation into light. An array of back-illuminated photo diodes (24) is mounted beneath the scintillation crystal array for converting the light emitted from the scintillation crystals into electrical charge. The electrical charge from the back-illuminated photodiodes is transmitted via a path orthogonal to the detector array (20, 40) to signal processing circuitry (66). The back-illuminated photodiode has a backside (26) which is in optical communication with the crystal array (22) and which is optically transmissive to photons of light emanating from the crystal. The converted electrical charge leaves the photodiode via electrical connections (28) or bump bonds (62, 72) on the front side of the photodiode. This arrangement allows a plurality of paths (46) through the substrate (42, 64) supporting the photodiode to provide electrical connectivity (44) from the array to processing circuitry (66), reducing or eliminating the bottleneck of electrical leads from conventional arrays.

Abstract translation: CT扫描器（10）包括用于从来自检测器阵列（20）的数字信号重建图像的重构处理器（32）。 每个检测器阵列包括以阵列布置的用于将x射线辐射转换成光的闪烁晶体（22）。 背光照明二极管（24）的阵列安装在闪烁晶体阵列下方，用于将从闪烁晶体发射的光转换成电荷。 来自背照式光电二极管的电荷经由与检测器阵列（20,40）正交的路径传输到信号处理电路（66）。 背照式光电二极管具有与晶体阵列（22）光学通信并且对从晶体发出的光的光子透光的背面（26）。 转换的电荷通过光电二极管正面上的电连接（28）或凸起键（62,72）离开光电二极管。 这种布置允许穿过支撑光电二极管的衬底（42,64）的多个路径（46）提供从阵列到处理电路（66）的电连接（44），从而减少或消除了来自常规阵列的电引线的瓶颈。

公开(公告)号：US6092928A

公开(公告)日：2000-07-25

申请号：US191094

申请日：1998-11-12

Applicant: Rodney A. Mattson ,  Pieter G. Roos

Inventor： Rodney A. Mattson ,  Pieter G. Roos

IPC: A61B6/00 ,  A61B6/08

CPC classification number: A61B6/583 ,  A61B6/08 ,  A61B6/4452 ,  A61B6/466 ,  A61B6/547 ,  A61B2562/0219 ,  A61B6/4464

Abstract: An x-ray source (30) transmits a beam of x-rays through an examination region (E). A detector (28), in an initial spatial orientation relative to the source, receives the beam and generates a view of image data indicative of the intensity of the beam received. A first accelerometer (40), capable of generating acceleration data in at least one dimension, is associated with the detector. A second accelerometer (42), capable of generating acceleration data in at least one dimension is associated with the source. A position calculator (60) mathematically calculates a position of both the source and detector based on the acceleration data generated by the accelerometers. An image reconstructor (62) receives the relative position data; electronically corrects for any misalignment or change in beam travel distance, and reconstructs the views into a volumetric image representation.

Abstract translation: X射线源（30）通过检查区域（E）传输一束x射线。 以相对于源的初始空间取向的检测器（28）接收波束并产生指示所接收的波束的强度的图像数据的视图。 能够在至少一个维度上产生加速度数据的第一加速度计（40）与检测器相关联。 能够在至少一个维度上生成加速度数据的第二加速度计（42）与源相关联。 位置计算器（60）基于由加速度计产生的加速度数据在数学上计算源和检测器的位置。 图像重构器（62）接收相对位置数据; 电子校正光束行进距离中的任何未对准或变化，并将视图重建为体积图像表示。