公开(公告)号：US20120075600A1

公开(公告)日：2012-03-29

申请号：US13231062

申请日：2011-09-13

申请人： Sho Sato ,  Tadao Endo ,  Toshio Kameshima ,  Tomoyuki Yagi ,  Katsuro Takenaka ,  Keigo Yokoyama ,  Atsushi Iwashita

发明人： Sho Sato ,  Tadao Endo ,  Toshio Kameshima ,  Tomoyuki Yagi ,  Katsuro Takenaka ,  Keigo Yokoyama ,  Atsushi Iwashita

IPC分类号： G03B27/02

CPC分类号： G03B42/02 ,  G03B7/08

摘要： An imaging apparatus includes a detector in which a plurality of pixels are arranged in a matrix; each pixel includes a conversion element that converts radiation or light into an electric charge. The detector performs an exposure imaging operation for outputting exposure image data, a correction imaging operation for outputting correction image data, and a correction imaging preparation operation including an initialization operation for initializing the conversion element between the exposure imaging operation and the correction imaging operation. A correction unit corrects the exposure image data using the correction image data; and a control unit controls the operation of the detector so that the detector performs the initialization operation based on an amount of variation in offset of the conversion element at the time of transitioning from an exposure imaging preparation operation to the exposure imaging operation.

摘要翻译： 一种成像设备包括其中多个像素被布置成矩阵的检测器; 每个像素包括将辐射或光转换成电荷的转换元件。 检测器执行用于输出曝光图像数据的曝光成像操作，用于输出校正图像数据的校正成像操作以及包括用于在曝光成像操作和校正成像操作之间初始化转换元件的初始化操作的校正成像准备操作。 校正单元使用校正图像数据校正曝光图像数据; 并且控制单元控制检测器的操作，使得检测器基于从曝光成像准备操作转换到曝光成像操作时的转换元件的偏移量的变化量执行初始化操作。

公开(公告)号：US20110024641A1

公开(公告)日：2011-02-03

申请号：US12844554

申请日：2010-07-27

申请人： Keigo Yokoyama ,  Tadao Endo ,  Toshio Kameshima ,  Masayoshi Akiyama ,  Tomoyuki Yagi ,  Katsuro Takenaka ,  Sho Sato

发明人： Keigo Yokoyama ,  Tadao Endo ,  Toshio Kameshima ,  Masayoshi Akiyama ,  Tomoyuki Yagi ,  Katsuro Takenaka ,  Sho Sato

IPC分类号： H01L27/00 ,  G01T1/26

CPC分类号： A61B6/06 ,  A61B6/4233 ,  A61B6/5241 ,  A61B6/542 ,  A61B6/585 ,  H04N5/32

摘要： An imaging apparatus includes a detector, having a plurality of pixels arranged in a matrix, for performing first and second radiography operations, a bias light source, and a control unit that controls the operation of the detector and the bias light source. In the first radiography operation, image data corresponding to radiation in a first radiation field corresponding to some of the pixels is output. In the second radiography operation, image data corresponding to radiation in a second radiation field larger than the first radiation field is output. In accordance with a change from the first radiation field to the second radiation field, the operation of the bias light source is controlled so that the irradiation with the bias light is performed during a period between the first and second radiography operations at a bias-light integral dose determined based on radiation integral dose information in the first radiography operation.

摘要翻译： 一种成像装置包括具有排列成矩阵的多个像素的检测器，用于执行第一和第二次X射线照相操作，偏置光源和控制检测器和偏置光源的操作的控制单元。 在第一次放射线照相操作中，输出与对应于一些像素的第一辐射场中的辐射对应的图像数据。 在第二次X射线摄影操作中，输出对应于大于第一辐射场的第二辐射场中的辐射的图像数据。 根据从第一辐射场到第二辐射场的变化，控制偏置光源的操作，使得在偏光下的第一和第二射线照相操作期间执行偏置光的照射 在第一次放射照相术中基于辐射积分剂量信息确定的积分剂量。

公开(公告)号：US07573041B2

公开(公告)日：2009-08-11

申请号：US12038346

申请日：2008-02-27

申请人： Toshio Kameshima ,  Tadao Endo ,  Tomoyuki Yagi ,  Katsuro Takenaka ,  Keigo Yokoyama

发明人： Toshio Kameshima ,  Tadao Endo ,  Tomoyuki Yagi ,  Katsuro Takenaka ,  Keigo Yokoyama

IPC分类号： H01L25/16

CPC分类号： H04N5/3658 ,  H01L27/14663 ,  H04N5/32 ,  H04N5/378

摘要： An imaging apparatus capable of reducing a line noise artifact in a simple configuration without complicated operations includes: a plurality of pixels arranged in row and column directions and having a photoelectric conversion element and a switch element; a plurality of signal wirings connected to the plurality of switch elements in the column direction; a read-out circuit connected to the plurality of signal wirings; and a power source for supplying a voltage to the photoelectric conversion element. With the configuration, the plurality of pixels are classified into a plurality of groups, and the power sources are independently provided for each of the plurality of groups.

摘要翻译： 能够以简单的结构减少线路噪声伪影而不需要复杂的操作的成像设备包括：排列成行和列方向并具有光电转换元件和开关元件的多个像素; 在列方向上连接到多个开关元件的多个信号布线; 连接到所述多个信号布线的读出电路; 以及用于向光电转换元件提供电压的电源。 利用该配置，将多个像素分成多个组，并且为多个组中的每一个独立地提供电源。

公开(公告)号：US07564038B2

公开(公告)日：2009-07-21

申请号：US11846054

申请日：2007-08-28

申请人： Tadao Endo ,  Toshio Kameshima ,  Tomoyuki Yagi ,  Katsuro Takenaka ,  Keigo Yokoyama

发明人： Tadao Endo ,  Toshio Kameshima ,  Tomoyuki Yagi ,  Katsuro Takenaka ,  Keigo Yokoyama

IPC分类号： G01T1/20 ,  G01T1/24

CPC分类号： H04N5/32 ,  H04N5/3658 ,  H04N5/374 ,  H04N5/3742 ,  H04N5/378

摘要： For reducing extremely conspicuous line noise appearing in a picked up image with a simple configuration without complicating the configuration of an apparatus, an imaging apparatus a first sampling and holding circuit for sampling and holding an electric signal from pixels in one column of the detection unit and a second sampling and holding circuit for sampling and holding and electric signal from pixels in the other column of the detection unit, and a control unit for controlling such that the first and second sampling and holding circuits perform the sampling and holding in mutually different timings.

摘要翻译： 为了以简单的配置减少出现在拾取图像中的非常明显的线路噪声，而不会使设备的配置复杂化，成像设备具有用于从检测单元的一列中的像素采样和保持电信号的第一采样和保持电路，以及 用于从检测单元的另一列中的像素采样和保持电信号的第二采样和保持电路;以及控制单元，用于控制使得第一和第二采样保持电路在相互不同的定时执行采样和保持。

公开(公告)号：US20090121143A1

公开(公告)日：2009-05-14

申请号：US12247491

申请日：2008-10-08

申请人： Katsuro Takenaka ,  Tadao Endo ,  Toshio Kameshima ,  Tomoyuki Yagi ,  Keigo Yokoyama

发明人： Katsuro Takenaka ,  Tadao Endo ,  Toshio Kameshima ,  Tomoyuki Yagi ,  Keigo Yokoyama

IPC分类号： G01T1/20 ,  G06F15/00

CPC分类号： H04N5/32 ,  H01L27/14663 ,  H04N5/361 ,  H04N5/365

摘要： Provided is a radiation imaging apparatus including: a conversion unit including a plurality of pixels arranged two dimensionally, wherein each of the pixels includes a conversion element (S1-1) for converting an incident radiation into an electric charge and a switching element (T1-1) for transferring an electric signal based on the electric charge; a drive circuit unit (106) for outputting, to the switching element, a drive signal having a voltage for turning on the switching element; a read out circuit unit (A1, CL1, 100 and 101) for reading out the electric signal from the pixel; a calculating unit (103) for calculating S/N ratio of the electric signal read out by the read out circuit unit; and a determination unit (104, 105 and LUT) capable of changing the voltage of the drive signal output from the drive circuit unit according to the S/N ratio calculated. As a result, the radiation imaging apparatus capable of improving the S/N ratio of the derived image is provided.

摘要翻译： 本发明提供一种放射线摄像装置，包括：转换单元，包括二维排列的多个像素，其中每个像素包括用于将入射辐射转换为电荷的转换元件（S1-1）和开关元件（T1- 1）用于基于电荷传送电信号; 驱动电路单元（106），用于向开关元件输出具有用于接通开关元件的电压的驱动信号; 读出电路单元（A1，CL1,100和101），用于从像素读出电信号; 计算单元，用于计算读出电路单元读出的电信号的S / N比; 以及能够根据所计算的S / N比来改变从驱动电路单元输出的驱动信号的电压的判定单元（104,105和LUT）。 结果，提供了能够提高导出图像的S / N比的放射线摄像装置。

公开(公告)号：US07514663B2

公开(公告)日：2009-04-07

申请号：US11765107

申请日：2007-06-19

申请人： Tomoyuki Yagi ,  Tadao Endo ,  Toshio Kameshima ,  Katsuro Takenaka ,  Keigo Yokoyama

发明人： Tomoyuki Yagi ,  Tadao Endo ,  Toshio Kameshima ,  Katsuro Takenaka ,  Keigo Yokoyama

IPC分类号： H01L27/00

CPC分类号： H04N5/376 ,  A61B6/503 ,  H04N5/32 ,  H04N5/343 ,  H04N5/3454 ,  H04N5/3456 ,  H04N5/347 ,  H04N5/374

摘要： An image apparatus capable of improving a frame rate to prevent resolution in the predetermined area from decreasing and forming image signals outside the predetermined area has an area sensor in which a plurality of pixels is arranged in a matrix, a drive circuit unit, a read out circuit unit and a processing unit processing signals transferred from the read out circuit unit. The drive circuit unit and the read out circuit unit perform a first operation in which signals are simultaneously read out from N pixels in a first area of the area sensor (where N is an integer equal to one or more) and a second operation in which signals are simultaneously read out from M pixels in a second area except the first area of the area sensor (where M is an integer equal to two or more and always greater than N), the first and second read out operations are continuously performed in one frame period, and a first and a second signal obtained by the first and the second read out operations are continuously transferred from the read out circuit unit to the processing unit.

摘要翻译： 能够提高帧速率以防止预定区域中的分辨率降低和形成预定区域外的图像信号的图像装置具有其中多个像素排列成矩阵的区域传感器，驱动电路单元，读出 电路单元和处理单元，处理从读出电路单元传送的信号。 驱动电路单元和读出电路单元执行第一操作，其中从区域传感器的第一区域（其中N是等于一个或多于一个的整数）的N个像素同时读出信号，其中第二操作 信号同时从除了区域传感器的第一区域（其中M是等于两个或更多且总是大于N的整数）的第二区域中的M个像素读出，第一和第二读出操作在一个 并且通过第一和第二读出操作获得的第一和第二信号从读出电路单元连续地传送到处理单元。

公开(公告)号：US20090086915A1

公开(公告)日：2009-04-02

申请号：US12328302

申请日：2008-12-04

申请人： Katsuro Takenaka ,  Tadao Endo ,  Toshio Kameshima ,  Tomoyuki Yagi ,  Keigo Yokoyama

发明人： Katsuro Takenaka ,  Tadao Endo ,  Toshio Kameshima ,  Tomoyuki Yagi ,  Keigo Yokoyama

IPC分类号： H05G1/58

CPC分类号： G01N23/04

摘要： When a gain correction is performed for the radiographed object image, the acquisition of the object image having a high grade quality and no artifact is realized. For that purpose, an image storing unit is provided for storing an image for correction radiographed based on conditions set with the table in a state in which no object exists to each operation modes of the plurality of operation modes; and an image processing unit is provided for performing a gain correction processing of the radiographed object image and performs the gain correction processing of the radiographed object image obtained based on the conditions set in the table of the operation mode selected by the selecting unit in a state in which the object exists using a corresponding image for correction extracted from the image storage unit based on the operation mode selected by the selecting unit.

摘要翻译： 当对于拍摄对象图像执行增益校正时，实现具有高等级质量并且不产生伪影的对象图像的获取。 为此目的，提供一种图像存储单元，用于根据在多个操作模式的每个操作模式中不存在对象的状态，基于用该表设置的条件来存储用于校正的校正图像; 并且提供图像处理单元，用于执行所拍摄的对象图像的增益校正处理，并且执行基于在状态中由选择单元选择的操作模式的表中设置的条件获得的拍摄对象图像的增益校正处理 基于由选择单元选择的操作模式，使用从图像存储单元提取的用于校正的对应图像存在对象。

公开(公告)号：US20090014661A1

公开(公告)日：2009-01-15

申请号：US11814749

申请日：2007-01-24

申请人： Tomoyuki Yagi ,  Tadao Endo ,  Toshio Kameshima ,  Katsuro Takenaka ,  Keigo Yokoyama

发明人： Tomoyuki Yagi ,  Tadao Endo ,  Toshio Kameshima ,  Katsuro Takenaka ,  Keigo Yokoyama

IPC分类号： G01T1/20 ,  H01J31/49

CPC分类号： A61B6/4488 ,  A61B6/4233 ,  A61B6/4405 ,  A61B6/4411 ,  A61B6/4429 ,  A61B6/56

摘要： A single flat panel detector provides radiation images which can correspond with various radiographic modes. In a radiation imaging apparatus including a flat panel detector which derives a radiation image according to incident radiation, a holding unit which holds the flat panel detector and a connecting mechanism capable of performing an connecting and a disconnecting between the holding unit and the flat panel detector, the flat panel detector can be controlled so that the maximum number of images of radiation images that the flat panel detector can derive when the flat panel detector is disengaged from the holding unit is smaller than the maximum number of images of radiation images that the flat panel detector can derive when the flat panel detector is held by the holding unit.

摘要翻译： 单个平板检测器提供可以对应于各种放射照相模式的辐射图像。 在包括根据入射辐射导出放射线图像的平板检测器的放射线成像设备中，保持平板检测器的保持单元和能够执行保持单元和平板检测器之间的连接和断开的连接机构 可以对平板检测器进行控制，使得当平板检测器与保持单元分离时，平板检测器可以获得的辐射图像的最大图像数量小于平面图像的最大图像数 当平板检测器被保持单元保持时，面板检测器可以导出。

公开(公告)号：US20080279334A1

公开(公告)日：2008-11-13

申请号：US12175495

申请日：2008-07-18

申请人： Katsuro Takenaka ,  Tadao Endo ,  Toshio Kameshima ,  Tomoyuki Yagi ,  Keigo Yokoyama

发明人： Katsuro Takenaka ,  Tadao Endo ,  Toshio Kameshima ,  Tomoyuki Yagi ,  Keigo Yokoyama

IPC分类号： H05G1/64 ,  H05G1/54

CPC分类号： G01T1/244 ,  H04N5/32 ,  H04N5/3698 ,  H04N5/374 ,  H04N5/378

摘要： A radiation imaging apparatus is capable of taking a moving picture by acquisition by a reading circuit of a plurality of radiation image signals on the basis of a plurality of successive times of irradiation of a radiation detector with radiation rays. The radiation detector has a two-dimensional array of pixels. In a period between a start of an n-th time of irradiation with radiation rays and a start of an (n+1)-th time of irradiation with radiation rays, where n is a natural number, a controller switches an operation status of an analog-to-digital converter that converts electric signals read by the reading circuit into digital signals so that power consumption of the analog-to-digital converter is reduced.

摘要翻译： 辐射成像装置能够通过基于放射线检测器的多次连续照射时间的多个辐射图像信号的读取电路进行拍摄来拍摄运动图像。 辐射检测器具有二维像素阵列。 在用放射线照射的第n次开始与第n + 1次放射线照射开始之间的期间，其中n是自然数，控制器切换操作状态 将由读取电路读取的电信号转换成数字信号的模拟 - 数字转换器，从而降低模数转换器的功耗。

公开(公告)号：US20070080299A1

公开(公告)日：2007-04-12

申请号：US11535726

申请日：2006-09-27

申请人： Tadao Endo ,  Toshio Kameshima ,  Tomoyuki Yagi ,  Katsuro Takenaka ,  Keigo Yokoyama

发明人： Tadao Endo ,  Toshio Kameshima ,  Tomoyuki Yagi ,  Katsuro Takenaka ,  Keigo Yokoyama

IPC分类号： G01T1/24

CPC分类号： G01T1/2018 ,  G01T1/247

摘要： It is made possible that, in accordance with a plurality of radiographing modes such as the still image radiographing mode and the moving image radiographing mode, the outputs both in the irradiation period and in the non-irradiation period are made to fall within the dynamic range of the radiographing system, whereby an accurate, high-S/N-ratio X-ray radiographic image is obtained. For that purpose, in accordance with the plurality of radiographing modes, an arithmetic operation unit adjusts a power source to control voltage to be applied to a reading circuit unit or an Analogue-Digital conversion unit, such that, in each of the radiographing modes, both an electric signal in the X-ray irradiation period and an electric signal in the X-ray non-irradiation period fall within the dynamic ranges of the reading circuit unit and the Analogue-Digital conversion unit.

摘要翻译： 有可能根据诸如静止图像放射照相模式和运动图像放射照相模式的多种放射照相模式，使得在照射期间和非照射期间的输出都落在动态范围内 的X射线照相系统，从而获得准确的高S / N比X射线照相图像。 为此，根据多个放射照相模式，算术运算单元调整电源以控制要施加到读取电路单元或模拟数字转换单元的电压，使得在每个放射照相模式中， X射线照射期间的电信号和X射线不照射期间的电信号都在读取电路部和模拟数字转换部的动态范围内。