公开(公告)号：US5044003A

公开(公告)日：1991-08-27

申请号：US579909

申请日：1990-09-10

申请人： Peter Zuidhof

发明人： Peter Zuidhof

IPC分类号： A61B6/00 ,  H04N5/225 ,  H04N5/32 ,  H04N7/18 ,  H05G1/64

CPC分类号： H04N5/32 ,  H05G1/64

摘要： Image flicker can be prevented by applying vertical image compression to the entrance screen of a television pick-up tube in a X-ray imaging system. To this end, an X-ray imaging system is provided with an anamorphic optical system. The compressed image is displayed on a television monitor in the correct proportions when the image detection face, scanned by the electron beam, in the television pick-up tube is adapted in conformity with the image compression.

公开(公告)号：US5015071A

公开(公告)日：1991-05-14

申请号：US438871

申请日：1989-11-20

申请人： Helmut Richter ,  Adelbert Kupfer

发明人： Helmut Richter ,  Adelbert Kupfer

IPC分类号： A61B6/00 ,  G02B27/10 ,  G03B42/02 ,  H05G1/02 ,  H05G1/64

CPC分类号： G03B42/023 ,  H05G1/64

摘要： A light distributor for an x-ray diagnostics installation has mirror-symmetrically disposed sets of light exit ports at a housing, which are adapted for connection to various different image recording components. Inside the housing, a mirror system is provided which can be arranged in a first position or a second position. When the system is arranged in the first position, light is directed from an input port of the light distributor to a first of the sets of light exit ports in the housing. When the mirror system is arranged in the second position, light from the input port is directed to a second of the sets of light exit ports. The mirror system can be changed between the first and second positions by a simple manual operation, using the same mirrors and the same mirror mounts, which are interchangeably accepted in a single set of mounting locations in the housing.

摘要翻译： 用于X射线诊断装置的光分布器在壳体处具有镜对称布置的光出口端口，其适于连接到各种不同的图像记录部件。 在壳体内部，设置有可以布置在第一位置或第二位置的反射镜系统。 当系统布置在第一位置时，光从分配器的输入端口引导到壳体中的一组光出口端口中的第一组。 当反射镜系统布置在第二位置时，来自输入端口的光被引导到一组光出射口中的第二组。 可以通过简单的手动操作在第一和第二位置之间改变镜子系统，使用相同的反射镜和相同的反射镜安装座，其可在壳体中的单个安装位置中互换地接受。

公开(公告)号：US4943988A

公开(公告)日：1990-07-24

申请号：US426977

申请日：1989-10-26

申请人： Hans-Juergen Gerlach ,  Horst Aichinger

发明人： Hans-Juergen Gerlach ,  Horst Aichinger

IPC分类号： A61B6/00 ,  H04N5/32 ,  H05G1/64

CPC分类号： H04N5/32 ,  A61B6/583 ,  H05G1/64

摘要： An x-ray diagnostics installation having an image intensifier video chain which back-projects a region of primary medical interest within an x-ray image into the overall video image is provided with fiber optics and opto-electronic transducers which are actuated by a switching bank in accordance with the desired shape and position of the region of primary interest. The transducers and switching arrangment can be removed, so that the output image from the x-ray image intensifier can be viewed at the output side of the fiber optics.

摘要翻译： 具有图像增强器视频链的X射线诊断装置设置有将由X射线图像内的主要医疗感兴趣的区域反投影到整个视频图像中的光纤诊断装置，光纤和光电换能器由开关组 根据所期望的主要兴趣区域的形状和位置。 可以去除换能器和开关布置，使得可以在光纤的输出侧观察来自x射线图像增强器的输出图像。

公开(公告)号：US4933961A

公开(公告)日：1990-06-12

申请号：US178228

申请日：1988-04-06

申请人： John G. Rushbrooke ,  Richard E. Ansorge

发明人： John G. Rushbrooke ,  Richard E. Ansorge

IPC分类号： G01V5/00 ,  A61B6/00 ,  G01N23/04 ,  G01T1/20 ,  G01T1/29 ,  H04N3/15 ,  H04N5/225 ,  H04N5/30 ,  H04N5/32 ,  H05G1/64

CPC分类号： H04N3/1593 ,  G01N23/043 ,  H04N5/32 ,  H05G1/64

摘要： An industrial x-ray inspection system has detecting means comprising a linear array of scintillator crystals operable to emit light in response to incident radiation, a bundle of optical fibers arranged so that an input end thereof is positioned at the detecting means for receiving light therefrom and an output end thereof is positioned at an image intensifier or camera wherein the optical fibers are regrouped so that the aspect ratios of the input and output ends of the bundle of optical fibers match those of the detecting means and the image intensifier or camera respectively. One optical fiber is associated with each scintillator crystal.

公开(公告)号：US4809309A

公开(公告)日：1989-02-28

申请号：US173682

申请日：1988-03-24

申请人： Antonius A. G. Beekmans

发明人： Antonius A. G. Beekmans

IPC分类号： H04N7/18 ,  A61B6/00 ,  G01N23/04 ,  H05G1/26 ,  H05G1/36 ,  H05G1/44 ,  H05G1/64

CPC分类号： H05G1/64 ,  H05G1/26 ,  H05G1/36 ,  H05G1/44

摘要： X-ray examination apparatus includes a detector array 32 for the detection of the light beam 10. The array is set up in such a manner that image information from substantially the entire output screen of an X-ray image-intensifier tube incorporated in the apparatus can be detected. The detector array is used for brightness control and for adaptation of the quantities influencing the image quality. Use is made of a measured field which can be programmed spatial image imformation can also be used by the matrix form of the detector.

摘要翻译： X射线检查装置包括用于检测光束10的检测器阵列32.该阵列以这样一种方式被设置成使得包含在该装置中的X射线图像增强管的大致整个输出屏幕的图像信息 可以检测。 检测器阵列用于亮度控制和适应影响图像质量的数量。 使用可以编程的测量场，空间图像信息也可以由检测器的矩阵形式使用。

公开(公告)号：US4636954A

公开(公告)日：1987-01-13

申请号：US565225

申请日：1983-12-23

申请人： Kenichi Komatsu ,  Senzo Fujii

发明人： Kenichi Komatsu ,  Senzo Fujii

IPC分类号： G01N23/04 ,  A61B6/00 ,  H04N5/32 ,  H05G1/64

CPC分类号： H05G1/64 ,  H04N5/32 ,  Y10S378/901

摘要： An X-ray diagnostic apparatus comprising an X-ray source for irradiating X rays to a patient, an image intensifier tube for converting an X-ray image, formed by transmitting X rays through the patient to an optical image, a television camera for receiving the optical image from the image intensifier tube through a diaphragm to output the video signal. In this pick-up apparatus, the X-ray source pre-irradiates one time a small dose of X-rays before main irradiation and there are provided a detector for detecting the maximum value of the video signal produced from the camera at the time of pre-irradiation, and an arithmetic operation circuit for calculating a diaphragm value from the maximum value detected and from pick-up conditions except a diaphragm value at the time of main irradiation of X rays in such a way that the maximum value of the video signal from the camera at the time of main irradiation becomes equal to the maximum permissible value of the camera.

摘要翻译： 一种X射线诊断装置，包括用于向患者照射X射线的X射线源，将通过患者X射线形成的X射线图像转换为光学图像的图像增强管，用于接收的电视摄像机 来自图像增强管的光学图像通过光阑输出视频信号。 在该拾取装置中，X射线源在主照射之前预先照射少量X射线的一次，并且提供检测器，用于检测从摄像机产生的视频信号的最大值 预辐照，以及用于根据检测到的最大值和从X射线主照射时的光阑值以外的拾取条件计算光阑值的算术运算电路，使得视频信号的最大值 在主照射时，相机的摄像头数量等于相机的最大允许值。

公开(公告)号：US4628355A

公开(公告)日：1986-12-09

申请号：US527553

申请日：1983-08-29

申请人： Ichiro Ogura ,  Motomu Suzuki ,  Senzo Fujii ,  Michitaka Honda

发明人： Ichiro Ogura ,  Motomu Suzuki ,  Senzo Fujii ,  Michitaka Honda

IPC分类号： G03B42/02 ,  A61B6/00 ,  G01N23/04 ,  H04N5/32 ,  H05G1/38 ,  H05G1/64

CPC分类号： H05G1/64 ,  H04N5/32 ,  H05G1/38

摘要： A diagnostic X-ray apparatus emitting pulsed X-ray radiation includes a processor for performing digital X-ray subtraction of a previous mask image from current images. The apparatus includes circuitry for digitization of the video signals from an image intensifier-TV chain, digital subtraction to obtain digital difference signals, and subsequent reconversion of the resultant digital difference video signals to analog signals. Pulsed X-ray exposures are performed during the blanking periods of the TV camera following which the television fields immediately following the pulsed X-ray exposure are scanned and read out, and are supplied to the processor for performing the digital X-ray subtraction.

摘要翻译： 发射脉冲X射线辐射的诊断X射线装置包括用于从当前图像执行先前掩模图像的数字X射线相减的处理器。 该装置包括用于从图像增强器-TV链数字化视频信号的电路，数字减法以获得数字差分信号，以及随后将所得到的数字差分视频信号重新转换为模拟信号。 在电视摄像机的消隐期间执行脉冲X射线曝光，随后扫描并读出紧接在脉冲X射线曝光之后的电视场，并将其提供给处理器进行数字X射线减法。

公开(公告)号：US4539591A

公开(公告)日：1985-09-03

申请号：US38831

申请日：1979-05-14

申请人： Alfonso Zermeno ,  Lee M. Marsh, Jr. ,  Ronald W. Cowart

发明人： Alfonso Zermeno ,  Lee M. Marsh, Jr. ,  Ronald W. Cowart

IPC分类号： G03G15/05 ,  G01T1/26 ,  G03G13/02 ,  G03G13/26 ,  G03G15/054 ,  G03G15/22 ,  G21K4/00 ,  H01L27/14 ,  H01L31/02 ,  H01L31/06 ,  H04N5/30 ,  H04N5/32 ,  H04N5/76 ,  H05G1/42 ,  H05G1/64 ,  H01J31/50

CPC分类号： G01T1/26 ,  G03G15/054 ,  G03G15/222 ,  G21K4/00 ,  H01L27/14 ,  H04N5/32 ,  H05G1/42 ,  H05G1/64

摘要： A method of recording and reading out a latent image which comprises placing a uniform surface charge on the photoconductive layer of a multilayered detector apparatus, biasing said photoconductive layer with an electric field whose polarity opposes said surface charge, discharging some portion of said surface charge of said photoconductive layer by exposing said detector to a modulated radiation flux capable of generating electron hole pairs in the photoconductor; scanning the surface of said partially discharged photoconductive layer with a small diameter photon beam whereby said surface charge is sequentially further discharged, and measuring the changing electric current of said sequential further discharge as a function of time.

摘要翻译： 一种记录和读出潜像的方法，其包括在多层检测器设备的光电导层上放置均匀的表面电荷，用极性与所述表面电荷相对的电场偏置所述光电导层，将所述表面电荷的一部分 所述光电导层通过将所述检测器暴露于能够在光电导体中产生电子空穴对的调制辐射通量; 用小直径光子束扫描所述部分放电的光电导层的表面，由此所述表面电荷依次进一步放电，并且测量作为时间的函数的所述顺序进一步放电的变化的电流。

公开(公告)号：US4503460A

公开(公告)日：1985-03-05

申请号：US426736

申请日：1982-09-29

申请人： Hartmut Sklebitz

发明人： Hartmut Sklebitz

IPC分类号： H04N5/32 ,  H05G1/64 ,  H04N3/12 ,  H04N3/14 ,  H04N5/30

CPC分类号： H04N5/32 ,  H05G1/64

摘要： An exemplary embodiment includes an X-ray image intensifier, an optic coupling device, a television pickup device with an optoelectronic solid state image converter, and a monitor, wherein the solid state image converter is constructed from n semiconductor image sensors each of which is formed of a matrix of sensor elements. The optic coupling device exhibits n lenses, and the lenses are so arranged that various regions of the outlet fluorescent screen of the X-ray image intensifier are imaged on the respective image sensors, so that the entire outlet fluorescent screen is scanned.

摘要翻译： 示例性实施例包括X射线图像增强器，光耦合装置，具有光电固态图像转换器的电视拾取装置和监视器，其中固态图像转换器由n个半导体图像传感器构成，每个半导体图像传感器形成 的传感器元件矩阵。 光耦合装置具有n个透镜，并且透镜被布置成使得X射线图像增强器的出口荧光屏的各个区域成像在各个图像传感器上，使得整个出口荧光屏被扫描。

公开(公告)号：US4444196A

公开(公告)日：1984-04-24

申请号：US390256

申请日：1982-06-21

申请人： Jay A. Stein

发明人： Jay A. Stein

IPC分类号： A61B6/00 ,  G06T5/50 ,  H04N5/32 ,  H05G1/64

CPC分类号： H05G1/64 ,  G06T5/50 ,  H04N5/32

摘要： In a digital intravenous subtraction angiography system an X-ray generator provides low mA continuous X-ray exposures illuminating a standard image intensifier producing an image scanned by a conventional television camera to provide a video signal. An analog-to-digital converter converts the video signal into digital form. The digital frame signals are added together in real time to provide an intermediate digital signal representing the addition of typically 5 to 20 frames. A digital disk receives and stores the intermediate image signals. A subsequent intermediate image signal is added to a second memory while a previously formed intermediate image signal is transferred from a first memory to disk storage. The first and second memories are operated in "ping pong" fashion so that each and every video frame signal during the acquisition period, typically 15 seconds, is summed to form one of the intermediate images. A selected mask image signal is subtracted from any or all intermediate image signals to provide an enhanced subtracted image signal. Various mask image signals may be subtracted so that the operator may decide by visual inspection of the subtracted image signals which mask image signal minimizes misregistration artifacts. Each intermediate image signal or each subtraction intermediate image signal is weighted approximately proportional to the contrast agent intensity to form a weighted sum signal. The operator may exclude from this combining process any intermediate signal which the operator has determined is not suitably registered. An intermediate image signal may be processed to provide a phantom image signal through translation and/or rotation of the intermediate image signal.

摘要翻译： 在数字静脉减压血管造影系统中，X射线发生器提供低mA连续X射线曝光，照射标准图像增强器，产生由常规电视摄像机扫描的图像以提供视频信号。 模拟 - 数字转换器将视频信号转换为数字形式。 将数字帧信号实时地相加在一起，以提供表示通常为5至20帧的相加的中间数字信号。 数字盘接收并存储中间图像信号。 随后的中间图像信号被添加到第二存储器，同时先前形成的中间图像信号从第一存储器传送到磁盘存储器。 第一和第二存储器以“乒乓”方式操作，使得在采集周期（通常为15秒）期间的每个视频帧信号被相加以形成中间图像之一。 从任何或所有中间图像信号中减去选择的掩模图像信号，以提供增强的减影图像信号。 可以减去各种掩模图像信号，使得操作者可以通过目视检查减去图像信号的减影图像信号来最大限度地减少不对准伪影。 每个中间图像信号或每个减法中间图像信号与造影剂强度近似成比例地加权，以形成加权和信号。 操作员可以从该组合处理中排除操作者已经确定的任何中间信号未被适当地登记。 可以处理中间图像信号以通过中间图像信号的平移和/或旋转来提供幻影图像信号。