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    X-ray diagnostic apparatus using an X-ray flat panel detector and method for controlling the X-ray diagnostic apparatus
    1.
    发明授权
    X-ray diagnostic apparatus using an X-ray flat panel detector and method for controlling the X-ray diagnostic apparatus 有权
    使用X射线平板检测器的X射线诊断装置和X射线诊断装置的控制方法

    公开(公告)号：US06222906B1

    公开(公告)日：2001-04-24

    申请号：US09238914

    申请日：1999-01-28

    申请人： Takuya Sakaguchi ,  Akira Tsukamoto ,  Masayuki Nishiki ,  Naoto Watanabe

    发明人： Takuya Sakaguchi ,  Akira Tsukamoto ,  Masayuki Nishiki ,  Naoto Watanabe

    IPC分类号： A61B600

    CPC分类号： A61B6/4441 ,  A61B6/06 ,  A61B6/12 ,  A61B6/4225 ,  A61B6/4233 ,  A61B6/469 ,  A61B6/481 ,  A61B6/504 ,  A61B6/563 ,  A61B6/588 ,  H01L27/14609 ,  H01L27/14663 ,  H04N5/32

    摘要： Pixel data in a region of a flat panel detector is obtained and displayed. For example, pixel data in a region irradiated with X-ray is obtained and displayed. The region to be irradiated with-the X-ray is estimated according to a degree of opening of an X-ray beam limiting device and a distance between the X-ray beam limiting device and the flat panel detector. Further, it can be determined from pixel data value of the flat panel detector also. A region of a patient can be also determined from the pixel data. Thus, an image corresponding to the entire flat panel detector, an image corresponding to an X-ray irradiation region and an image corresponding to a patient region can be displayed. A resolution for obtaining the pixel data is changed corresponding to the size of a region in the flat panel detector whose pixel data should be obtained and a processing resolution of an image processing means at post step. Particularly in an X-ray diagnostic apparatus of bi-plane structure, an observation region can be traced flexibly.

    摘要翻译： 获得并显示平板检测器的区域中的像素数据。 例如，获得并显示用X射线照射的区域中的像素数据。 根据X射线束限制装置的开度和X射线束限制装置与平板检测器之间的距离来估计要用X射线照射的区域。 此外，也可以从平板检测器的像素数据值确定。 还可以从像素数据确定患者的区域。 因此，可以显示对应于整个平板检测器的图像，对应于X射线照射区域的图像和与患者区域相对应的图像。 用于获得像素数据的分辨率相应于应获得像素数据的平板检测器中的区域的大小和后级步骤中的图像处理装置的处理分辨率而改变。 特别是在双平面结构的X射线诊断装置中，可以灵活地追踪观察区域。

    X-ray radiographic apparatus
    2.
    发明授权
    X-ray radiographic apparatus 失效
    X射线摄影装置

    公开(公告)号：US4901336A

    公开(公告)日：1990-02-13

    申请号：US286151

    申请日：1988-12-19

    申请人： Masayuki Nishiki

    发明人： Masayuki Nishiki

    IPC分类号： H05G1/64 ,  A61B6/00 ,  A61B6/03 ,  H04N5/32 ,  H04N5/335 ,  H04N5/341 ,  H04N5/353 ,  H04N5/361 ,  H04N5/3725 ,  H04N5/378 ,  H05G1/44 ,  H05G1/60

    CPC分类号： H05G1/60 ,  H04N5/32 ,  H05G1/44

    摘要： An X-ray radiographic apparatus including a solid-state image sensor having a photoelectric conversion member and a transfer member. A system controller stops supplying field shift pulses, and a electric charge is not transferred from the photoelectric conversion member to the transfer member, during X-ray irradiation until a quantity of X-rays reaches predetermined value. One frame image data from the solid-state image sensor just after X-ray irradiating term is obtained. It is easy to obtain data corresponding to one frame image which is of proper density. The electric signal is read from the transfer member while the system controller has stopped the supplying of field shift pulses. It is possible to suppress an increase of dark current noise, and obtain high quality X-ray image data.

    摘要翻译： 一种X射线摄影装置，包括具有光电转换部件和转印部件的固体摄像元件。 系统控制器在X射线照射期间停止提供场偏移脉冲，并且电荷不会从光电转换构件转移到转印构件，直到X射线量达到预定值。 获得刚刚在X射线照射项之后的固态图像传感器的一帧图像数据。 很容易获得对应于具有适当密度的一帧图像的数据。 当系统控制器停止提供场偏移脉冲时，从传送部件读取电信号。 可以抑制暗电流噪声的增加，并获得高质量的X射线图像数据。

    X-ray imaging apparatus
    6.
    发明授权
    X-ray imaging apparatus 失效
    X射线成像装置

    公开(公告)号：US5101421A

    公开(公告)日：1992-03-31

    申请号：US620641

    申请日：1990-12-03

    申请人： Masayuki Nishiki

    发明人： Masayuki Nishiki

    IPC分类号： H04N5/32 ,  H05G1/60

    CPC分类号： H04N5/32 ,  H05G1/60

    摘要： An X-ray imaging apparatus comprises an X-ray generator, an image intensifier for converting an X-ray image of a subject under examination to an optical image, a solid state image sensor for picking up the optical image of the image intensifier, a driver circuit for driving the solid state image sensor and a television monitor for visually displaying an image signal obtained from the solid state image sensor as an X-ray optical image. The X-ray generator is controlled such that an X-ray pulse is not emitted during an interval in which the solid state image sensor transfers charges from image sensing sections to charge storage sections.

    摘要翻译： 一种X射线成像装置，包括：X射线发生器，用于将检查对象的X射线图像转换为光学图像的图像增强器;用于拾取图像增强器的光学图像的固态图像传感器; 用于驱动固态图像传感器的驱动电路和用于可视地显示从固态图像传感器获得的图像信号的电视监视器作为X射线光学图像。 控制X射线发生器，使得在固态图像传感器将电荷从图像感测部分转移到电荷存储部分的间隔期间不发射X射线脉冲。

    X-ray fluoroscopic apparatus using a solid-state imaging device
    7.
    发明授权
    X-ray fluoroscopic apparatus using a solid-state imaging device 失效
    使用固态成像装置的X射线透视装置

    公开(公告)号：US5187584A

    公开(公告)日：1993-02-16

    申请号：US497649

    申请日：1990-03-23

    申请人： Masayuki Nishiki ,  Yukio Endo

    发明人： Masayuki Nishiki ,  Yukio Endo

    IPC分类号： A61B6/00 ,  H04N5/217 ,  H04N5/32 ,  H04N5/341 ,  H04N5/351 ,  H04N5/357 ,  H04N5/372 ,  H04N5/378 ,  H04N7/18

    CPC分类号： H04N5/32 ,  H04N3/1525

    摘要： In an X-ray fluoroscopic apparatus including an X-ray tube for radiating an X-ray onto an object to be examined, an image intensifier for converting an X-ray image transmitted through the object into an optical image, a solid-state imaging device having an amorphous silicon layered type charge-coupled device for imaging the optical image through an optical system connected to an output of the image intensifier, and a display for displaying an output image signal from the solid-state imaging device. The solid-state imaging device performs interlaced scanning in a frame storage mode in the odd-numbered field, and in a field storage mode in the even-numbered field.

    摘要翻译： 在包括用于将X射线照射到待检查对象的X射线管的X射线荧光检查装置中，将通过物体透射的X射线图像转换为光学图像的图像增强器，固态成像 具有非晶硅层状电荷耦合器件的器件，用于通过连接到图像增强器的输出的光学系统对光学图像进行成像，以及显示器，用于显示来自固态成像器件的输出图像信号。 固态成像装置在奇数场中以帧存储模式和偶数场中的场存储模式执行隔行扫描。

    X-ray diagnostic apparatus
    8.
    发明授权
    X-ray diagnostic apparatus 失效
    X光诊断仪

    公开(公告)号：US4924487A

    公开(公告)日：1990-05-08

    申请号：US213965

    申请日：1988-07-01

    申请人： Masayuki Nishiki

    发明人： Masayuki Nishiki

    IPC分类号： A61B6/00 ,  A61B6/02 ,  H05G1/64

    CPC分类号： A61B6/4225 ,  A61B6/00

    摘要： An X-ray diagnostic apparatus has two modes, i.e., a fluoroscopy mode for displaying an X-ray fluoroscopic image, and a radiography mode which is selected in response to a radiography instruction in the fluoroscopy mode, for recording an X-ray radiographic image. X-ray fluoroscopic image data obtained by an X-ray image detector in the fluoroscopy mode is converted to a digital image signal by an A/D converter. At least a plurality of frames of digital image signals of X-ray fluoroscopic images corresponding to a period which includes an input timing of the radiography instruction are continuously stored in a fluoroscopic image memory section.

    摘要翻译： X射线诊断装置具有两种模式，即用于显示X射线透视图像的荧光透视模式和响应于荧光透视模式中的放射线照相指令而选择的用于记录X射线照相图像的放射线照相模式 。 通过X射线图像检测器在荧光透视模式下获得的X射线透视图像数据通过A / D转换器转换为数字图像信号。 与包括射线照相指令的输入定时的周期相对应的X射线荧光镜图像的数字图像信号的至少多个帧被连续地存储在透视图像存储部中。

    Radiographic image detection apparatus
    9.
    发明授权
    Radiographic image detection apparatus 失效
    射线照相图像检测装置

    公开(公告)号：US4689487A

    公开(公告)日：1987-08-25

    申请号：US771033

    申请日：1985-08-30

    申请人： Masayuki Nishiki ,  Kazuhiro Iinuma

    发明人： Masayuki Nishiki ,  Kazuhiro Iinuma

    IPC分类号： G01T1/24 ,  H04N5/32 ,  G01T1/20

    CPC分类号： G01T1/2018 ,  H04N5/32

    摘要： An X-ray image transmitted through a patient is radiated on a phosphor member having a wide field of view and dimensions of about 40 cm.times.40 cm, and is converted into an optical image. The optical image is radiated on a light detector through a light guide member at substantially the same magnification. The light detector has pixels arranged in a 2,000.times.2,000 two-dimensional matrix form. Each pixel has a photocell and a MOSFET connected to each photocell. The photocell is electrically equivalent to a parallel circuit consisting of a photosensitive portion and an electrode capacitor. An extra capacitor is parallel-connected to the parallel circuit and a switch can turn on/off a connection between the extra capacitor and the photocell. When the optical image is radiated on the photocells, each photocell generates charges corresponding to the light amount, and the light amount is recorded in the electrode capacitor or the electrode capacitor and the extra capacitor, as a charged electrical amount. When this electrical amount is read out by shift registers, the optical image can be read out as a time-serial electrical signal. In a fluoroscopy mode with a small dose, the extra capacitor is not used. However, in a radiography mode with a large dose, the extra capacitor is used so as to increase a capacitance of the capacitors connected to the photocell. Thus, X-ray detection in X-ray fluoroscopy and radiography modes can be performed with a wide field of view.

    摘要翻译： 通过患者透射的X射线图像被照射在具有约40cm×40cm的宽视野和尺寸的荧光体部件上，并被转换为光学图像。 光学图像通过导光部件以基本上相同的放大率照射在光检测器上。 光检测器具有以2,000x2,000的二维矩阵形式排列的像素。 每个像素具有光电池和连接到每个光电池的MOSFET。 光电池电气上等同于由感光部分和电极电容器组成的并联电路。 一个额外的电容并联到并联电路，开关可以打开/关闭额外的电容器和光电管之间的连接。 当光学图像被照射在光电管上时，每个光电池产生与光量相对应的电荷，并且将光量记录在电极电容器或电极电容器和额外的电容器中，作为充电电量。 当通过移位寄存器读出该电量时，可以将光学图像作为时间串行电信号读出。 在小剂量的荧光透视模式下，不使用额外的电容。 然而，在具有大剂量的放射线照相模式下，使用额外的电容器来增加连接到光电池的电容器的电容。 因此，可以在宽视野下进行X射线荧光透视和放射摄影模式中的X射线检测。

    Multi-channel radiation detector array
    10.
    发明授权
    Multi-channel radiation detector array 失效
    多通道辐射探测器阵列

    公开(公告)号：US4571494A

    公开(公告)日：1986-02-18

    申请号：US480271

    申请日：1983-03-30

    申请人： Masayuki Nishiki ,  Toshihiro Rifu

    发明人： Masayuki Nishiki ,  Toshihiro Rifu

    IPC分类号： G01N23/04 ,  A61B6/03 ,  G01T1/24 ,  G01T1/29 ,  H01J47/02 ,  H01L31/115

    CPC分类号： H01L31/115 ,  G01T1/2928 ,  H01J47/02

    摘要： An X-ray detector has a plurality of detector units and a pair of support members. Each detector unit has a base plate, a detector element secured to the base plate, and a retaining plate supporting the detector element. The base plate has a signal line and a ground line for delivering an electrical signal from the detector element. The retaining plate is positioned parallel to the detector element. The support members are set apart and extend along an arc the center of which is an X-ray source. Each support member has a plurality of slits (grooves) cut in the face facing the other support member and juxtaposed at predetermined intervals along said arc. The end portions of each retaining plate are fitted in one slit of one of the support members and the corresponding slit of the other support member, respectively. Therefore, the detector units are supported by the support members and the detector elements are juxtaposed along said arc and set parallel to the X-ray beams from the X-ray source.

    摘要翻译： X射线检测器具有多个检测器单元和一对支撑构件。 每个检测器单元具有基板，固定到基板的检测器元件和支撑检测器元件的保持板。 基板具有用于传送来自检测器元件的电信号的信号线和接地线。 保持板平行于检测器元件定位。 支撑构件分开并沿着其中心为X射线源的弧延伸。 每个支撑构件具有在朝向另一支撑构件的面中切割并沿着所述弧以预定间隔并置的多个狭缝（凹槽）。 每个保持板的端部分别装配在一个支撑构件的一个狭缝和另一个支撑构件的相应的狭缝中。 因此，检测器单元由支撑构件支撑，并且检测器元件沿着所述弧并置并且平行于来自X射线源的X射线束设置。