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：US07436444B2

公开(公告)日：2008-10-14

申请号：US11289559

申请日：2005-11-30

申请人： Tadao Endo

发明人： Tadao Endo

IPC分类号： H04N5/335 ,  H04N3/14

CPC分类号： H04N5/335 ,  H04N5/32

摘要： A radiation image pick-up apparatus includes a conversion element, accumulation element, read element, detection element, driving circuit, and controller. The conversion element converts radiation into an electrical signal. The accumulation unit accumulates the electrical signal converted by the conversion element. The read unit reads out the electrical signal accumulated in the accumulation unit. The detection element detects the start and end of irradiation of the radiation. The driving circuit accumulates the electrical signal in the accumulation element responsive to the detection of start of irradiation of the radiation, and drives the read element responsive to the detection of the end of irradiation of the radiation, based on the detection result of the detection element. The controller controls the driving circuit. A radiation image pick-up system is also disclosed.

摘要翻译： 放射线摄像装置包括转换元件，累积元件，读取元件，检测元件，驱动电路和控制器。 转换元件将辐射转换为电信号。 累加单元累积由转换元件转换的电信号。 读取单元读出累积单元中累积的电信号。 检测元件检测辐射的照射的开始和结束。 驱动电路响应于检测到辐射的开始的检测而积累积累元件中的电信号，并且基于检测元件的检测结果来响应于对辐射的照射结束的检测来驱动读取元件 。 控制器控制驱动电路。 还公开了一种辐射摄像系统。

公开(公告)号：US07342221B2

公开(公告)日：2008-03-11

申请号：US10991436

申请日：2004-11-19

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

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

IPC分类号： G12B13/00

CPC分类号： G01T1/2928 ,  A61B6/5258 ,  A61B6/583

摘要： A plurality of correction images are obtained while changing the radiation energy of an incident radiation in the absence of an object. Subsequently, an object image is obtained in the presence of the object by emitting the radiation to the object. Then, the object image is corrected by using a correction image obtained under a radiation energy condition closest to the radiation energy of the obtained object image.

摘要翻译： 在不存在物体的同时改变入射辐射的辐射能量的同时获得多个校正图像。 随后，通过向对象发射辐射来在对象的存在下获得对象图像。 然后，通过使用在最接近所获得的对象图像的辐射能量的辐射能量条件下获得的校正图像来校正对象图像。

公开(公告)号：US07227151B2

公开(公告)日：2007-06-05

申请号：US11400334

申请日：2006-04-10

申请人： Tadao Endo

发明人： Tadao Endo

IPC分类号： G01T1/24

CPC分类号： H04N5/361 ,  G01T1/2928 ,  H04N5/32

摘要： In a photoelectric conversion device, in order to suppress alteration of its properties during a long time use, lower the decrease of the S/N ratio due to a dark current output, and shorten image-pickup cycles, MIS type photoelectric conversion elements using an amorphous semiconductor material are connected with an electric power source for applying bias for photoelectric conversion, an electric power for resetting an accumulated electric charge, and a setting point for applying zero bias at the time of non-operation of the element through a switch. Emitted x-rays from an x-ray source, which is a first light source, come into collision against phosphor after being transmitted through an object body to be inspected and then are absorbed in the phosphor to be converted into visible light rays. The visible light rays from the phosphor are radiated to the photoelectric conversion elements. Prior to reading out of the x-ray image, an LED light source is lighted. Switches are used for turning on the x-ray source and the LED light source. In this embodiment, there is a reading-out period and a non-reading-out period; the x-ray source is turned on during the reading-out period, and the LED light source is turned on during the non-reading-out period.

摘要翻译： 在光电转换装置中，为了抑制长时间使用时的特性的变化，可以降低由暗电流输出引起的S / N比的降低，缩短摄像周期的MIS型光电转换元件 非晶半导体材料与用于施加用于光电转换的偏压的电源连接，用于复位累积电荷的电力，以及通过开关在元件不操作时施加零偏置的设定点。 来自作为第一光源的X射线源的X射线在被透射通过要检查的物体后与荧光体碰撞，然后被吸收在荧光体中以被转换成可见光线。 来自荧光体的可见光被照射到光电转换元件。 在读取x射线图像之前，LED光源点亮。 开关用于打开X射线源和LED光源。 在本实施例中，存在读出期间和非读出期间; 在读出期间X射线源被接通，并且在非读出期间LED光源被接通。

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。

公开(公告)号：US20060289774A1

公开(公告)日：2006-12-28

申请号：US11450577

申请日：2006-06-12

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

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

IPC分类号： G01T1/24

CPC分类号： A61B6/405 ,  A61B6/032 ,  A61B6/0478 ,  A61B6/4035 ,  A61B6/463 ,  A61B6/482

摘要： A radiographic imaging apparatus includes a radiation detection circuit in which a plurality of conversion elements to convert radiation emitted from a radiation source and transmitted through an object into an electrical signal are arranged two-dimensionally, a driving mechanism which changes a positional relationship between the object and the radiation source and the radiation detection circuit, a memory which stores, as image data, the electrical signal detected by the radiation detection circuit, an imaging control unit which controls the radiation source to change energy of the radiation emitted from the radiation source between radiography of a first frame and radiography of a second frame different from the first frame and controls driving of the driving mechanism in capturing a plurality of continuous radiographic images of the object, and an image processing unit which executes subtraction processing of image data of the first frame and image data of the second frame stored in the memory to generate a processed image and generates a tomographic image or a 3D image of the object by using the processed image.

摘要翻译： 放射线摄像成像装置包括放射线检测电路，其中多个转换元件将从辐射源发射并通过物体传输的辐射转换成电信号被二维布置，驱动机构改变物体之间的位置关系 以及辐射源和放射线检测电路，存储器，其存储由辐射检测电路检测的电信号作为图像数据;成像控制单元，其控制辐射源以改变从辐射源发射的辐射的能量; 第一帧的X射线照相和与第一帧不同的第二帧的X射线照相，并且控制驱动机构的驱动以捕获对象的多个连续的放射线图像;以及图像处理单元，执行第一帧的图像数据的减法处理 存储第二帧的帧和图像数据i n存储器以生成经处理的图像，并且通过使用处理的图像生成对象的断层图像或3D图像。

公开(公告)号：US07127031B2

公开(公告)日：2006-10-24

申请号：US10827435

申请日：2004-04-20

申请人： Tadao Endo

发明人： Tadao Endo

IPC分类号： H05G1/64 ,  H05G1/32

CPC分类号： G01T1/2928 ,  A61B6/405 ,  A61B6/482 ,  A61B6/50 ,  H01L27/14609 ,  H01L27/14663

摘要： A radiation detector includes radiation detection elements for detecting radiations which have penetrated an object as electric signals, with the elements arranged in a two-dimensional array, and an image display controller for producing a radiation image of the object detected as the electric signals with the radiation detector as continuous images including a plurality of frames. The image display controller switches a tube voltage of a radiation source for emitting the radiations between a first voltage at a time of producing odd images and a second voltage at a time of producing even images and controls a display device to continuously display a plurality of processed images as a dynamic image. Each of the processed images are obtained by performing a subtraction process between an odd image of the odd images and an even image of the even images, wherein the even image is derived in succession to the odd image.

摘要翻译： 辐射检测器包括用于检测作为电信号穿透物体的辐射的放射线检测元件，其中元件以二维阵列排列;以及图像显示控制器，用于产生被检测为电信号的物体的辐射图像， 辐射检测器作为包括多个帧的连续图像。 图像显示控制器在产生奇数图像时切换用于发射第一电压之间的辐射的辐射源的管电压和产生均匀图像时的第二电压，并且控制显示装置连续显示多个处理的 图像作为动态图像。 通过执行奇数图像的奇数图像和偶数图像的偶数图像之间的相减处理来获得每个经处理的图像，其中偶数图像依次导出为奇数图像。

公开(公告)号：US07109492B2

公开(公告)日：2006-09-19

申请号：US11387794

申请日：2006-03-24

申请人： Tadao Endo

发明人： Tadao Endo

IPC分类号： G01T1/24 ,  H01L25/00 ,  H01L27/146

CPC分类号： H01L27/14658 ,  G01T1/2928 ,  H04N5/32

摘要： An object of this invention is to implement a radiographic apparatus which can stably obtain a moving image at a high speed by suppressing a voltage variation in GND or power supply line and omitting the standby period for each frame. To achieve this object, during a period after electrical signals from conversion elements (S1-1-S1-3) in one control interconnection (G1) are transferred and read for each row by a driving circuit section (SR1) before electrical signals in the next control interconnection are transferred and read, the read-accessed conversion elements are refreshed for each row, thereby eliminating the necessity for preparing a refresh period in acquiring continuous moving images. In addition, since the conversion elements are refreshed for each row, the dark current (transient current) in the refresh mode can be made small as compared to a case wherein all the conversion elements are refreshed at once. With this arrangement, the voltage variation in GND or power supply line is suppressed.

摘要翻译： 本发明的目的是实现通过抑制GND或电源线中的电压变化并省略每帧的待机时间来稳定地获得高速运动图像的放射线照相设备。 为了实现该目的，在一个控制互连（G 1）中的来自转换元件（S1-1-3-3）的电信号在驱动电路部分（SR 1）之前传送并读取每行的时间段内 下一个控制互连中的电信号被传送和读取，对于每行刷新读访问的转换元件，从而消除了准备获取连续运动图像的刷新周期的必要性。 此外，由于转换元件为每行刷新，所以与全部刷新一次的情况相比，刷新模式中的暗电流（瞬态电流）可以变小。 通过这种布置，可以抑制GND或电源线的电压变化。

公开(公告)号：US07081629B2

公开(公告)日：2006-07-25

申请号：US11325495

申请日：2006-01-05

申请人： Tadao Endo

发明人： Tadao Endo

IPC分类号： G01T1/24

CPC分类号： H01L27/14658 ,  G01T1/2928 ,  H04N5/32

摘要： An object of this invention is to implement a radiographic apparatus which can stably obtain a moving image at a high speed by suppressing a voltage variation in GND or power supply line and omitting the standby period for each frame. To achieve this object, during a period after electrical signals from conversion elements (S1-1–S1-3) in one control interconnection (G1) are transferred and read for each row by a driving circuit section (SR1) before electrical signals in the next control interconnection are transferred and read, the read-accessed conversion elements are refreshed for each row, thereby eliminating the necessity for preparing a refresh period in acquiring continuous moving images. In addition, since the conversion elements are refreshed for each row, the dark current (transient current) in the refresh mode can be made small as compared to a case wherein all the conversion elements are refreshed at once. With this arrangement, the voltage variation in GND or power supply line is suppressed.

公开(公告)号：US20060115048A1

公开(公告)日：2006-06-01

申请号：US11325495

申请日：2006-01-05

申请人： Tadao Endo

发明人： Tadao Endo

IPC分类号： H05G1/64

CPC分类号： H01L27/14658 ,  G01T1/2928 ,  H04N5/32

摘要： An object of this invention is to implement a radiographic apparatus which can stably obtain a moving image at a high speed by suppressing a voltage variation in GND or power supply line and omitting the standby period for each frame. To achieve this object, during a period after electrical signals from conversion elements (S1-1-S1-3) in one control interconnection (G1) are transferred and read for each row by a driving circuit section (SR1) before electrical signals in the next control interconnection are transferred and read, the read-accessed conversion elements are refreshed for each row, thereby eliminating the necessity for preparing a refresh period in acquiring continuous moving images. In addition, since the conversion elements are refreshed for each row, the dark current (transient current) in the refresh mode can be made small as compared to a case wherein all the conversion elements are refreshed at once. With this arrangement, the voltage variation in GND or power supply line is suppressed.