公开(公告)号：US09000382B2

公开(公告)日：2015-04-07

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 ,  G01T1/00

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：US20120049074A1

公开(公告)日：2012-03-01

申请号：US13319100

申请日：2010-04-14

Applicant: Randall P. Luhta ,  Rodney A. Mattson ,  Brian E. Harwood

Inventor： Randall P. Luhta ,  Rodney A. Mattson ,  Brian E. Harwood

IPC: G01T1/20 ,  B23P6/00 ,  G01T1/16

CPC classification number: G01T1/2985

Abstract: A radiation sensitive detector array includes a plurality of detector modules (118) extending along a z-axis direction and aligned along an x-axis direction with respect to the imaging system (100). At least one of the detector modules (118) includes a module backbone (124) and at least one detector tile (122). The at least one detector tile (122) is coupled to the module backbone (124) through a non-threaded fastener (142). The at least one detector tile (122) includes a two-dimensional detector (126) and a two-dimensional anti-scatter grid (128) that is focused at a focal spot (112) of an imaging system (100).

Abstract translation: 辐射敏感检测器阵列包括沿着z轴方向延伸并且相对于成像系统（100）沿x轴方向排列的多个检测器模块（118）。 检测器模块（118）中的至少一个包括模块主干（124）和至少一个检测器瓦片（122）。 至少一个检测器瓦片（122）通过非螺纹紧固件（142）联接到模块主干（124）。 至少一个检测器瓦片（122）包括聚焦在成像系统（100）的焦点（112）处的二维检测器（126）和二维防散射网格（128）。

公开(公告)号：US20080298541A1

公开(公告)日：2008-12-04

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: A61B6/03

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：US06553092B1

公开(公告)日：2003-04-22

申请号：US09519704

申请日：2000-03-07

Applicant: Rodney A. Mattson ,  Olga Shapiro

Inventor： Rodney A. Mattson ,  Olga Shapiro

IPC: A61B600

CPC classification number: G01T1/2018

Abstract: X-rays from an x-ray tube (16) pass through an examination region (14) and are detected by a single or two-dimensional x-ray detector (20). The x-ray detector (20) includes an array (22) of photodiodes, CCD devices, or other opto-electrical transducer elements. A matching array (24) of transparent scintillator crystals, e.g., CdWO4, is supported on and optically coupled to the photoelectric transducer array. A layer (26) of a high efficiency scintillator with a good spectral match with the opto-electrical transducer array but with limited light transmissiveness is optically coupled to the transparent scintillator array. The layer (26) is preferably zinc selenide ZnSe (Te). Electrical signals from the transducer array are reconstructed (32) into an image representation and converted into a human-readable display (38). To reduce cross-talk, the zinc selenide layer is etched with pits (40), sliced into strips (26′), cut into rectangles (26″), or has channels (44) cut into it. Scatter grids (46) are advantageously received in the channels. Alternately, the zinc selenide can be powdered, encased in a transparent binder, and applied as a coating layer (26″′) to the individual transparent scintillator elements.

Abstract translation: 来自X射线管（16）的X射线通过检查区域（14），并由单个或二维X射线检测器（20）检测。 X射线检测器（20）包括光电二极管阵列（22），CCD器件或其它光电换能器元件。 透明闪烁体晶体（例如CdWO 4）的匹配阵列（24）被支撑在光电转换器阵列上并光耦合到光电转换器阵列。 与光电换能器阵列具有良好光谱匹配但具有有限的光透射率的高效闪烁器的层（26）被光耦合到透明闪烁体阵列。 层（26）优选为硒化锌ZnSe（Te）。 将来自换能器阵列的电信号重构（32）成图像表示并转换成人类可读显示器（38）。 为了减少串扰，硒化锌层用凹坑（40）蚀刻，切成条状（26'），切成矩形（26“），或者具有切入其中的通道（44）。 散布网格（46）有利地被接收在通道中。 或者，硒化锌可以被粉末化，包裹在透明粘合剂中，并作为涂层（26“'）施加到单独的透明闪烁体元件。

公开(公告)号：US06510195B1

公开(公告)日：2003-01-21

申请号：US09908347

申请日：2001-07-18

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

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

IPC: A61B600

CPC classification number: H01L27/14661 ,  G01T1/2018 ,  G01T1/202 ,  G01T1/2985

Abstract: A CT scanner (10) includes a reconstruction processor (32) and a mosaic X-Radiation detector (20). The mosaic detector includes plural detector elements (22, 22, 23, 24, 25, 26) arranged in abutting relationship and configured for the desired imaging application. The detector elements include scintillating crystals (50) in optical communication with a back-illuminated photodiode array (52) or modified top-surface photodiode array (152, 252) for converting emitted light into electrical charge. The photodiode array is mounted on a carrier substrate (58) via bump (56) bonding. The carrier substrate provides a conductive path routing the photodiode array output through to contacts on the back side for connection to readout electronics (60). The carrier substrate and readout electronics are contained within the footprint defined by the photodiode array, allowing the detector elements to be abutted on any and all sides, thus permitting the mosaic detector to be tailored to any desired size and shape.

Abstract translation: CT扫描器（10）包括重构处理器（32）和马赛克X辐射检测器（20）。 马赛克检测器包括以邻接关系布置的多个检测器元件（22,22,23,24,25,26），并且被配置用于期望的成像应用。 检测器元件包括与背照式光电二极管阵列（52）或修改的顶表面光电二极管阵列（152,252）光学通信的闪烁晶体（50），用于将发射的光转换成电荷。 光电二极管阵列经由凸块（56）接合而安装在载体基板（58）上。 载体衬底提供将光电二极管阵列输出穿过至背侧的触点的导电路径，用于连接到读出电子器件（60）。 载体衬底和读出电子器件包含在由光电二极管阵列限定的覆盖区内，允许检测器元件抵靠在任何侧面和所有侧面上，从而允许马赛克检测器被调整为任何所需的尺寸和形状。

公开(公告)号：US4008400A

公开(公告)日：1977-02-15

申请号：US635952

申请日：1975-11-28

Applicant: Carl J. Brunnett ,  Jerome R. Cox, Jr. ,  Donald L. Snyder ,  Rodney A. Mattson

Inventor： Carl J. Brunnett ,  Jerome R. Cox, Jr. ,  Donald L. Snyder ,  Rodney A. Mattson

IPC: A61B6/03 ,  G01N23/06

CPC classification number: A61B6/4014 ,  A61B6/032 ,  A61B6/4488

Abstract: A dual axial scanner in a transverse tomography system collects nonredundant data throughout one or more substantially 360.degree. orbital scan paths with uniform motion about a patient. A set of N X-ray beams scans the patient in a manner to allow collection of two sets of non-redundant data corresponding to a pair of 180.degree. scans in each 360.degree. scan. Overall time to conduct the study is decreased, and the number of required accelerations and decelerations of the assemblies is minimized.Adjacent beams of radiation are separated by an angle .alpha., which is one degree in the preferred embodiment to provide a radiation field of ##EQU1## degrees on either side of a center of the radiation field. The source and detector assemblies are positioned prior to the first orbit such that the field center is offset a distance D from a center of orbit lying in the orbital plane. The source and detector assemblies are mounted for rotation through a rotation angle .phi..sub.j about an orbital source axis which passes through the source assembly at a distance d from the center of orbit. While maintaining the offset distance D, the assemblies orbit the patient, and radiation intensity data is collected at predetermined angles .gamma..sub.j of orbit.In one embodiment for doubling the effective field size of the patient scanned, the source and detector assemblies are rotated about the source axis to provide the distance D. From an initial position on the center of orbit, the assemblies are rotated by an offset angle ##EQU2## degrees where R is the number of total orbits selected to constitute a complete study. In another embodiment for single field exposure the source and detector assemblies are rotated by the offset angle .phi. defined substantially by the equation ##EQU3## degrees, where "b" is zero for an odd number N of detectors and is one for an even number N of detectors. For multiorbit studies, the assemblies are rotated between orbits by an amount ##EQU4## degrees depending on the study.

Abstract translation: 横向断层摄影系统中的双轴扫描仪在一个或多个基本上360°的轨道扫描路径中收集非冗余数据，并以围绕患者的均匀运动。 一组N X射线束以每360度扫描的方式扫描患者，以便收集对应于一对180度扫描的两组非冗余数据。 总体来说，进行研究的时间减少了，组件所需的加速度和减速度的数量被最小化。

公开(公告)号：US20120313000A1

公开(公告)日：2012-12-13

申请号：US13510168

申请日：2010-11-18

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

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

IPC: G01T7/00

CPC classification number: G01T7/005

Abstract: A detector tile (116) of an imaging system (100) includes a photosensor array (204) and electronics (208) electrically coupled to the photosensor array (204), wherein the electronics includes a dose determiner (402) that determines a deposited dose for the detector tile (116) and generates a signal indicative thereof. In one non-limiting instance, this signal is utilized to correct parameters such as gain and thermal coefficients, which may vary with radiation dose.

Abstract translation: 成像系统（100）的检测器瓦片（116）包括电耦合到光电传感器阵列（204）的光电传感器阵列（204）和电子器件（208），其中电子器件包括确定沉积剂量的剂量确定器（402） 用于检测器瓦片（116）并产生指示其的信号。 在一个非限制性实例中，该信号用于校正诸如增益和热系数之类的参数，其可随辐射剂量而变化。

公开(公告)号：US20120057670A1

公开(公告)日：2012-03-08

申请号：US13319151

申请日：2010-04-15

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

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

IPC: A61B6/03

CPC classification number: A61B6/032 ,  A61B6/4241 ,  A61B6/4266 ,  A61B6/4452 ,  G01T1/1644 ,  G01T1/2985

Abstract: An imaging system (100) includes a radiation source (108) that emits radiation that traverses an examination region (106) and a detection system (114) that detects radiation that traverses the examination region (106) and generates a signal indicative thereof. The detection system (114) includes a first detector array (1141-114N) and a second detector array (1141-114N). The first and second detector arrays (1141-114N) are separately distinct detector arrays and at least one of the detector arrays (1141-114N) is moveable with respect to the radiation beam. A reconstructor (116) reconstructs the signal and generates volumetric image data indicative thereof.

Abstract translation: 成像系统（100）包括发射穿过检查区域（106）的辐射的辐射源（108）和检测穿过检查区域（106）的辐射并产生指示其的信号的检测系统（114）。 检测系统（114）包括第一检测器阵列（1141-114N）和第二检测器阵列（1141-114N）。 第一和第二检测器阵列（1141-114N）是分别不同的检测器阵列，并且检测器阵列（1141-114N）中的至少一个可相对于辐射束移动。 重构器（116）重建信号并产生指示其的体积图像数据。

公开(公告)号：US20090238330A1

公开(公告)日：2009-09-24

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: H05G1/60

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）具有至少一个时变特性，如偏移量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：US6041097A

公开(公告)日：2000-03-21

申请号：US55607

申请日：1998-04-06

Applicant: Pieter Gerhard Roos ,  Andrew J. Ivan ,  Rodney A. Mattson

Inventor： Pieter Gerhard Roos ,  Andrew J. Ivan ,  Rodney A. Mattson

IPC: G06T1/00 ,  A61B6/03 ,  G01N23/04

CPC classification number: A61B6/4233 ,  A61B6/032

Abstract: A gantry (10) includes a large diameter bearing having an outer race (12) and an inner race (16) which surrounds an examination region. An x-ray tube (18) and collimator (52) are mounted to the inner race, as is a flat panel detector (20) and a mechanical mechanism (50) for moving the flat panel detector closer to and further from the examination region. A timing and control circuit (30) controls a motor (22) which indexes the inner race around the examination region, an x-ray power supply (32) which pulses the x-ray tube in a fluoroscopic mode at discrete positions around the examination region, and a read out circuit (34) which reads out a frame of data after each pulse of the x-ray tube. The read out frames of data are stored in a frame memory (36) and reconstructed by a reconstruction processor (38) into a volumetric image representation for storage in a volume image memory (40). A video processor (42) reformats individual frames from frame memory (36) or selected portions of volume image representation from the volume image memory (40) into appropriate format for display on a video monitor (44). A magnification control (54) coordinates adjustment of the collimator (52) and movement of the flat plate detector toward and away from the examination region.

Abstract translation: 台架（10）包括具有围绕检查区域的外圈（12）和内座圈（16）的大直径轴承。 如同平板检测器（20）和机械机构（50）一样，将X射线管（18）和准直器（52）安装到内座圈上，用于使平板检测器更靠近和远离检查区域 。 定时和控制电路（30）控制围绕检查区域对内座圈进行索引的马达（22），在检查周围的离散位置以荧光检查模式脉冲X射线管的X射线电源（32） 区域，以及读出电路（34），其在x射线管的每个脉冲之后读出数据帧。 读出的数据帧被存储在帧存储器（36）中并由重建处理器（38）重建成体积图像表示，以存储在卷图像存储器（40）中。 视频处理器（42）将来自帧存储器（36）的单个帧或从卷图像存储器（40）的卷图像表示的选定部分重新格式化为用于在视频监视器（44）上显示的适当格式。 放大控制器（54）协调准直器（52）的调节和平板检测器朝向和远离检查区域的移动。