公开(公告)号：US4905268A

公开(公告)日：1990-02-27

申请号：US222521

申请日：1988-07-21

Applicant: Rodney A. Mattson ,  Robert E. Levar

Inventor： Rodney A. Mattson ,  Robert E. Levar

IPC: A61B6/03 ,  A61B6/06 ,  G21K1/02

CPC classification number: A61B6/4488 ,  A61B6/032 ,  A61B6/06 ,  G21K1/025

Abstract: A radiographic apparatus (10) includes an x-ray tube (16), an off-focal radiation collimator (20), a shutter (22), and a primary beam defining collimator (24) between the x-ray tube and patient receiving region (14). The off-focal collimator is mounted within a collar (48) which surrounds an x-ray port (36) of the x-ray tube. The tube port is sealed from the atmosphere by an aluminum window (46). A plate (62) of a radiation blocking material is rotatably mounted by a bearing (70) within the collar closely adjacent the aluminum window. By rotating the moveable plate, aperture or radiation passing slots or portions (62, 64) of different sizes are selectively brought into alignment between a focal spot (34) of the x-ray tube and a radiation passing region or slot (52) of a stationary plate (50) at the distal end of the collar. The aligned slots block the passage of off-focal radiation. Moreover, rotating slots of different sizes into alignment changes the size or angle of the x-ray fan beam.

Abstract translation: 放射线照相设备（10）包括X射线管（16），非焦距辐射准直器（20），快门（22）和在x射线管和患者接收之间限定准直器（24）的主光束 区域（14）。 偏焦准直器安装在围绕x射线管的x射线端口（36）的轴环（48）内。 管口通过铝合金窗口（46）与大气密封。 辐射阻挡材料的板（62）通过轴承（70）可旋转地安装在紧邻铝窗的轴环内。 通过旋转可移动板，孔径或辐射通过的狭槽或不同尺寸的部分（62,64）在X射线管的焦斑（34）和辐射通过区域或狭槽（52）之间被选择性地对准 在所述套环的远端处的固定板（50）。 对齐的插槽阻挡了非焦距辐射的通过。 此外，不同尺寸的旋转槽对准改变了x射线扇形束的尺寸或角度。

公开(公告)号：US4870667A

公开(公告)日：1989-09-26

申请号：US302097

申请日：1989-01-24

Applicant: Carl J. Brunnett ,  Rodney A. Mattson

Inventor： Carl J. Brunnett ,  Rodney A. Mattson

IPC: G01T1/20 ,  G01T1/202

CPC classification number: G01T1/202 ,  G01T1/2018

Abstract: An improved computed tomography radiation detector is disclosed. One embodiment includes first and second layers of crystalline scintilation material mutually aligned in a path of x-rays to be detected, to receive the x-rays in sequence. The layer upstream in the x-ray path comprises a scintillation material having a relatively high efficiency for converting x-ray energy to light. The downstream one of the layers comprises a scintillation material having a relatively lower efficiency for x-ray/light conversion. A photodiode is positioned to view both scintillation layers simultaneously and to respond to scintillations in either or both. Scintillation crystal material surfaces can be coated with reflective material to enhance the effects of their scintillations. The photodiode thus combines x-ray indicating scintillations from both crystals while in analog form. The detector exhibits enhanced response to lower energy x-rays. Another embodiment comprises a photodiode and an optically coupled scintillation crystal, with the photodiode upstream in the x-ray beam path relative to the crystal.

Abstract translation: 公开了一种改进的计算机断层摄影辐射检测器。 一个实施例包括在待检测的x射线的路径中相互对准的第一和第二晶体闪烁材料层，以顺序接收x射线。 x射线路径上游的层包括具有将X射线能量转换为光的相对较高效率的闪烁材料。 下游层之一包括具有相对较低的x射线/光转换效率的闪烁材料。 光电二极管被定位成同时观察两个闪烁层并且在两者之一或两者中对闪烁进行响应。 闪烁晶体材料表面可以用反射材料涂覆以增强其闪烁的影响。 因此，光电二极管结合来自两个晶体的X射线指示闪烁，同时以模拟形式。 检测器对较低能量的X射线表现出增强的响应。 另一个实施例包括光电二极管和光耦合闪烁晶体，其中光电二极管相对于晶体在x射线束路径上游。

公开(公告)号：US4779621A

公开(公告)日：1988-10-25

申请号：US16266

申请日：1987-02-19

Applicant: Rodney A. Mattson

Inventor： Rodney A. Mattson

IPC: A61B5/08 ,  A61B6/00

CPC classification number: A61B6/583 ,  A61B5/0813 ,  A61B6/00

Abstract: A xenon concentration phantom (A) is mounted in a CT scanner (B). A xenon/oxygen breathing gas mixture from a breathing gas supply system is (C) circulated through an analysis chamber (12) of the phantom before a human scan is commenced. The CT scanner measures the amount of radiation absorption attributable to the gas in the analysis chamber, which absorption varies in proportion to the concentration of xenon gas. The measured radiation absorption is converted into a precise measurement or indication of the xenon concentration of the breathing gas. The precise xenon concentration measurement may be utilized to calibrate xenon gas detectors (80, 100) in the breathing gas supply system or to calibrate xenon concentration dependent diagnostic data generated during a subsequent patient scan while the patient is breathing the breathing gas.

Abstract translation: 氙浓度体模（A）安装在CT扫描仪（B）中。 来自呼吸气体供应系统的氙/氧呼吸气体混合物（C）在人体扫描开始之前通过体模的分析室（12）循环。 CT扫描仪测量归因于分析室中的气体的辐射吸收量，该吸收与氙气的浓度成比例地变化。 测量的辐射吸收转化为呼吸气体的氙气浓度的精确测量或指示。 精确的氙气浓度测量可用于校准呼吸气体供应系统中的氙气体检测器（80,100），或校准在患者呼吸呼吸气体期间随后的患者扫描期间产生的氙浓度依赖性诊断数据。

公开(公告)号：US4686692A

公开(公告)日：1987-08-11

申请号：US722672

申请日：1985-04-12

Applicant: Gordon D. DeMeester ,  Rodney A. Mattson

Inventor： Gordon D. DeMeester ,  Rodney A. Mattson

IPC: G01N23/04 ,  A61B6/00 ,  A61B6/03 ,  A61B6/04

CPC classification number: A61B6/0457 ,  A61B6/032 ,  A61B6/4275 ,  Y10S378/901

Abstract: Method and apparatus for a computed tomography patient localization scan. A source of radiation that orbits a patient during a normal computed tomography scan is fixed relative an array of radiation detectors. The patient is then moved in a direction generally perpendicular to the plane of the radiating source and array to obtain a first shadowgraph data set. The source is orbited a small amount and the patient is again moved relative the source and detector array to obtain a second shadowgraph set of data. The two sets of data are then interleaved to obtain a shadowgraph image having higher resolution than either the first or second shadowgraph.

Abstract translation: 计算机断层扫描患者定位扫描的方法和装置。 在正常计算机断层摄影扫描期间围绕患者的辐射源相对于辐射检测器阵列是固定的。 然后将患者沿大致垂直于辐射源和阵列的平面的方向移动，以获得第一阴影图数据集。 来源围绕少量轨道，并且患者再次相对于源和检测器阵列移动以获得第二个阴影集数据。 然后将两组数据进行交织以获得比第一或第二阴影图具有更高分辨率的阴影图像。

公开(公告)号：US08710448B2

公开(公告)日：2014-04-29

申请号：US12293842

申请日：2007-03-08

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: G01T1/20 ,  H01L31/00

CPC classification number: H01L27/14663 ,  G01N2223/501 ,  G01T1/2018 ,  H01L23/3114 ,  H01L24/73 ,  H01L27/14618 ,  H01L27/14634 ,  H01L27/14661 ,  H01L2224/0401 ,  H01L2224/04042 ,  H01L2224/0603 ,  H01L2224/06051 ,  H01L2224/16145 ,  H01L2224/32145 ,  H01L2224/32225 ,  H01L2224/32245 ,  H01L2224/48091 ,  H01L2224/48145 ,  H01L2224/73253 ,  H01L2224/73265 ,  H01L2924/14 ,  H01L2924/1433 ,  H01L2924/15192 ,  H01L2924/16151 ,  H01L2924/16235 ,  H01L2924/19104 ,  H01L2924/19105 ,  H01L2924/3025 ,  H01L2924/00012 ,  H01L2924/00014 ,  H01L2924/00

Abstract: A radiation detector module (22) particularly well suited for use in computed tomography (CT) applications includes a scintillator (200), a photodetector array (202), and signal processing electronics (205). The photodetector array (202) includes a semiconductor substrate (208) having a plurality of photodetectors and metalization (210) fabricated on non-illuminated side of the substrate (208). The metalization routes electrical signals between the photodetectors and the signal processing electronics (205) and between the signal processing electronics (205) and an electrical connector (209).

Abstract translation: 特别适用于计算机断层摄影（CT）应用的辐射探测器模块（22）包括闪烁体（200），光电检测器阵列（202）和信号处理电子器件（205）。 光电探测器阵列（202）包括半导体衬底（208），该半导体衬底具有多个光电检测器和在衬底（208）的非照射侧制造的金属化（210））。 金属化路由光电检测器和信号处理电子器件（205）之间以及信号处理电子器件（205）和电连接器（209）之间的电信号。

公开(公告)号：US20110210256A1

公开(公告)日：2011-09-01

申请号：US13128883

申请日：2009-10-29

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

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

IPC: G01T1/20

CPC classification number: G01T1/2018 ,  G01T1/00 ,  G01T1/161

Abstract: A one-dimensional multi-element photo detector (120) includes a photodiode array (122) with a first upper row of photodiode pixels and a second lower row of photodiode pixels. The photodiode array (122) is part of the photo detector (120). A scintillator array (126) includes a first upper row and a second lower row of scintillator pixels. The first upper and second lower rows of scintillator pixels are respectively optically coupled to the first upper and second lower rows of photodiode pixels. The photo detector (120) also includes readout electronics (124), which are also part of the photo detector (120). Electrical traces (512) interconnect the photodiode pixels and the readout electronics (124).

Abstract translation: 一维多元素光电检测器（120）包括具有第一上行光电二极管像素和第二下行光电二极管像素的光电二极管阵列（122）。 光电二极管阵列（122）是光电检测器（120）的一部分。 闪烁体阵列（126）包括第一上列和第二下列闪烁体像素。 闪烁体像素的第一上，下下排分别光耦合到光电二极管像素的第一上列和第二下行。 光检测器（120）还包括读出电路（124），其也是光电检测器（120）的一部分。 电迹线（512）将光电二极管像素和读出电路（124）互连。

公开(公告)号：US07379528B2

公开(公告)日：2008-05-27

申请号：US10541623

申请日：2003-12-17

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

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

IPC: H05G1/60 ,  H05G1/64 ,  G01T1/24

CPC classification number: G01N23/046 ,  G01N2223/419 ,  G01T1/2018 ,  G01T1/2985

Abstract: A radiation detector module includes a scintillator (62, 62′, 162, 262) arranged to receive penetrating radiation of a computed tomography apparatus (10). The scintillator produces optical radiation responsive to the penetrating radiation. A detector array (66, 66′, 166, 266) is arranged to convert the optical radiation into electric signals. Electronics (72, 72′, 172, 272) are arranged on a side of the detector array opposite from the scintillator in a path of the penetrating radiation. A radiation shield (86, 86′, 100, 100′, 100″, 186, 210, 210′, 286, 286′) is disposed between the detector array and the electronics to absorb the penetrating radiation that passes through the scintillator. The radiation shield includes openings (90, 90′) that communicate between the detector array and the electronics. Electrical feedthroughs (88, 88′, 102, 102′, 102″, 188, 212, 212′, 288, 288′) pass through the radiation shield openings and electrically connect the detector array and the electronics.

Abstract translation: 放射线检测器模块包括布置成接收计算机断层摄影装置（10）的穿透辐射的闪烁体（62,62'，162,262）。 闪烁体产生响应穿透辐射的光辐射。 检测器阵列（66,66'，166,266）被布置成将光辐射转换成电信号。 在穿透辐射的路径中，电子器件（72,72'，172,272）被布置在与闪烁体相反的检测器阵列的一侧。 辐射屏蔽（86,86'，100,100'，100“，186,210,210'，286,286'）设置在检测器阵列和电子器件之间以吸收通过闪烁体的穿透辐射。 辐射屏蔽包括在检测器阵列和电子装置之间通信的开口（90,90'）。 电馈通（88,88'，102,102'，102“，188,212,212'，288,288'）穿过辐射屏蔽开口并电连接检测器阵列和电子装置。

公开(公告)号：US07277523B2

公开(公告)日：2007-10-02

申请号：US10560671

申请日：2004-05-28

Applicant: Rodney A. Mattson

Inventor： Rodney A. Mattson

IPC: A61B6/00

CPC classification number: A61B6/032 ,  A61B6/488 ,  A61B6/542 ,  G01N23/046 ,  G01N2223/419 ,  G01N2223/612

Abstract: A diagnostic imaging system includes an x-ray source (16), which is rotated around an examination region (20). A subject, disposed on a couch (30), is translated longitudinally through the examination region (20). The x-ray source (16) is pulsed at selected angular location(s), e.g. one or both of 6 and 12 o'clock, to transmit x rays through the subject as it is being translated through the examination region (20). The transmitted radiation is being detected by a radiation detector (22) and is reconstructed by an image processor (52) into a two-dimensional projection pilot scan image. A subject contour is calculated and is used along with the radiation attenuation data by a dose calculator (60) to determine the minimum radiation dose required to produce a constant quality image.

Abstract translation: 诊断成像系统包括围绕检查区域（20）旋转的x射线源（16）。 放置在沙发上的被摄体纵向扫过检查区域（20）。 x射线源（16）在选定的角位置例如脉冲。 6和12点的一个或两个，通过被摄体透过检查区域（20）传输x射线。 所发射的辐射由辐射检测器（22）检测，并由图像处​​理器（52）重构为二维投影导频扫描图像。 计算对象轮廓并且通过剂量计算器（60）与辐射衰减数据一起使用以确定产生恒定质量图像所需的最小辐射剂量。

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：US5493599A

公开(公告)日：1996-02-20

申请号：US300974

申请日：1994-09-06

Applicant: Rodney A. Mattson

Inventor： Rodney A. Mattson

IPC: H05G1/00 ,  A61B6/00 ,  A61B6/03 ,  A61B6/06 ,  G21K1/02 ,  H01J35/00 ,  H01J35/02 ,  H01J35/24 ,  H05G1/04 ,  H05G1/26 ,  H05G1/32 ,  H05G1/52 ,  H05G1/60 ,  H05G1/64

CPC classification number: H01J35/24 ,  A61B6/032 ,  A61B6/035 ,  A61B6/06 ,  A61B6/4028 ,  A61B6/4275 ,  A61B6/4488 ,  A61B6/56 ,  G21K1/025 ,  H01J35/02 ,  H05G1/025 ,  H05G1/04 ,  H05G1/26 ,  H05G1/32 ,  H05G1/52 ,  H05G1/60 ,  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 (20) 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 pass through a patient aperture (62) to strike a detector (60). The x-ray tube includes pre-collimators (70, 74) having slots (72, 76) for passage of the x-ray subsequent to generation thereof and prior to being collimated by the collimator (90). A ring collimator (90) collimates an x-rays formed into a fan shaped beam. The collimator (90) includes a first ring (92) and a second ring (94) which are concentric. The distance between the first and second rings (92, 94) is adjustable to adjust the slice thickness of the final image. The x-ray tube provides improved final images in that reduction of off-focal radiation occurs due to the utilization of pre-collimators and the collimation of x-rays is flexible due to adjustability of slice thickness.

Abstract translation: 环形X射线管（I）由机架（II）支撑并选择性定位。 X射线管包括其中转子（20）可旋转地安装在其中的环形壳体（A）。 一个或多个阴极（C）安装在转子上，用于产生撞击阳极（B）的电子束，以产生穿过患者孔（62）以撞击检测器（60）的X射线束。 X射线管包括具有用于x射线在其生成之后并且在被准直器（90）准直之前通过的狭槽（72,76）的准准直器（70,74）。 环准直器（90）使形成为扇形梁的X射线准直。 准直器（90）包括同心的第一环（92）和第二环（94）。 第一和第二环（92,94）之间的距离是可调节的，以调节最终图像的切片厚度。 X射线管提供改进的最终图像，因为由于使用预准直器而导致的非局部辐射的减少，并且由于切片厚度的可调性，x射线的准直是柔性的。