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41. 发明授权

US4956857A X-ray fluoroscopic apparatus 失效
标题翻译： X光透视仪
公开(公告)号：US4956857A
公开(公告)日：1990-09-11
申请号：US217982
申请日：1988-07-12
申请人： Kaoru Kurosaki
发明人： Kaoru Kurosaki
IPC分类号： A61B6/00 , H05G1/36 , H05G1/44 , H05G1/46 , H05G1/60 , H05G1/64
CPC分类号： H05G1/64 , H05G1/36 , H05G1/46
摘要： An F-kV and an F-mA output from tube-voltage adjuster and tube-current adjuster, respectively, are supplied to exposure-rate controller. Controller compares an input entrance exposure rate determined by the F-kV and the F-mA with a preset exposure rate set in view of a patient's safety. When the former is equal to or less than the latter, controller supplies the input F-kV and F-mA to X-ray tube. When the former exceeds the latter, controller supplies an F-kV and an F-mA corresponding to the preset exposure rate to X-ray tube and a limit signal to auto-iris controller. X-rays output from X-ray tube are transmitted through patient to form an X-ray image. The X-ray image is converted into an optical image by image intensifier tube. After the light quantity of the optical image is reduced by auto-iris, the optical image is picked up by TV camera. TV camera outputs an image signal to TV monitor and brightness detector. Brightness detector detects the brightness of an image displayed on TV monitor, and outputs it to auto-iris controller. In the normal mode wherein no limit signal is supplied, auto-iris controller closes auto-iris based on the operation method and the input size of the field of view of the image intensifier tube. When a limit signal is input, auto-iris controller opens auto-iris such that an output from brightness detector becomes a predetermined value.
摘要翻译：分别由管电压调节器和管电流调节器的F-kV和F-mA输出提供给曝光率控制器。控制器根据患者的安全性将由F-kV和F-mA确定的输入入口暴露率与设定的预设曝光率进行比较。当前者等于或小于后者时，控制器将输入F-kV和F-mA提供给X射线管。当前者超过后者时，控制器将对应于X射线管的预设曝光率的F-kV和F-mA提供给自动光圈控制器。从X射线管输出的X射线通过患者传播以形成X射线图像。通过图像增强管将X射线图像转换成光学图像。在通过自动光圈减少光学图像的光量之后，通过电视摄像机拾取光学图像。电视摄像机将图像信号输出到电视监视器和亮度检测器。亮度检测器检测电视显示屏上显示的图像的亮度，并将其输出到自动光圈控制器。在没有提供限制信号的正常模式下，自动光圈控制器根据操作方法和图像增强管的视野的输入尺寸关闭自动光圈。当输入限位信号时，自动光圈控制器打开自动光圈，使得亮度检测器的输出变为预定值。

42. 发明授权

US4955043A X-ray diagnostics installation 失效
标题翻译： X光诊断安装
公开(公告)号：US4955043A
公开(公告)日：1990-09-04
申请号：US244153
申请日：1988-09-14
申请人： Anton Nekovar
发明人： Anton Nekovar
IPC分类号： H05G1/36 , H05G1/60 , H05G1/64
CPC分类号： A61B6/469 , H05G1/36 , H05G1/60 , H05G1/64
摘要： An x-ray diagnostics installation has an x-ray source, an x-ray image intensifier connected to a video chain and a processing circuit which controls various components of the installation. The processing circuit includes a weighting circuit which allocates an individual weighting factor to different regions of the x-ray image. The processing circuit also includes an evaluation circuit, connected to the weighting circuit, which combines the signals from the weighted image regions to form an actual value signal, which is used to control certain of the components of the installation.
摘要翻译： x射线诊断装置具有x射线源，连接到视频链的x射线图像增强器和控制安装的各种组件的处理电路。该处理电路包括一个加权电路，该加权电路为x射线图像的不同区域分配一个单独的加权因子。处理电路还包括连接到加权电路的评估电路，其组合来自加权图像区域的信号以形成用于控制设备的某些部件的实际值信号。

43. 发明授权

US4472826A X-Ray examination apparatus 失效
标题翻译： X射线检查仪
公开(公告)号：US4472826A
公开(公告)日：1984-09-18
申请号：US468232
申请日：1983-02-22
申请人： Johannes T. A. van de Ven
发明人： Johannes T. A. van de Ven
IPC分类号： G03B42/02 , A61B6/00 , G01N23/04 , G01N23/18 , H04N7/18 , H05G1/26 , H05G1/36 , H05G1/64 , H05G1/30
CPC分类号： H05G1/36 , H05G1/64
摘要： In an X-ray examination apparatus comprising an image intensifier tube and an optical light distribution system there is included an image field selector, by means of which, using a subbeam diverted from the imaging beam, a measurement field can be selected and by means of which this measurement field or a boundary outline thereof can be projected back into the imaging radiation path. Thus, it is achieved that during an examination stage an indication of the extent and location of a measurement field which is considered to be relevant for controlling the desired exposure for pictures to be produced, can be constantly displayed on the image screen of the television monitor.
摘要翻译：在包括图像增强管和光分配系统的X射线检查装置中，包括图像场选择器，通过该图像场选择器使用从成像光束转向的子束，可以选择测量场，并且通过该测量场或其边界轮廓可以投影回到成像辐射路径中。因此，实现了在检查阶段期间，可以不断地在电视监视器的图像屏幕上显示被认为与用于控制要产生的图像的期望曝光相关的测量场的范围和位置的指示。

44. 发明授权

US4363971A Method of and apparatus for controlling the electric power applied to a rotary-anode X-ray tube 失效
标题翻译：用于控制施加到旋转阳极X射线管的电力的方法和装置
公开(公告)号：US4363971A
公开(公告)日：1982-12-14
申请号：US167908
申请日：1980-07-14
申请人： Rudolf Ochmann
发明人： Rudolf Ochmann
IPC分类号： H05G1/26 , H05G1/36
CPC分类号： H05G1/26 , H05G1/36
摘要： The temperature of the anode disc of a rotary-anode X-ray tube is continuously determined by means of the method apparatus in accordance with the invention. When the temperature exceeds a first limit value, the power of the X-ray tube is reduced to a fraction (for example, 80%) of the otherwise permissible power. When a second limit value of the anode disc temperature is exceeded, exposures are completely inhibited. In the case of exposures which are performed in rapid succession with a comparatively low power, it may occur that the anode disc temperature does not reach the second limit value, but that the mean value of the applied electric power is so high that the bearing of the rotary anode, and possibly also the joint between the anode shaft and the rotor, is overloaded. Overloading is prevented by generating a bearing-temperature signal indicative of the rotary anode bearing temperature and comparing it with a third limit value.
摘要翻译：通过根据本发明的方法设备连续地确定旋转阳极X射线管的阳极盘的温度。当温度超过第一极限值时，X射线管的功率降低到另外允许的功率的分数（例如，80％）。当超过阳极盘温度的第二极限值时，曝光完全被抑制。在以相对较低的功率快速连续地进行的曝光的情况下，可能发生阳极盘温度未达到第二极限值，但是所施加的电力的平均值如此高旋转阳极以及阳极轴和转子之间的接合也可能过载。通过产生表示旋转阳极轴承温度的轴承温度信号并将其与第三限制值进行比较来防止过载。

45. 发明授权

US4354112A X-ray cine radiography apparatus 失效
标题翻译： X射线电影摄影仪
公开(公告)号：US4354112A
公开(公告)日：1982-10-12
申请号：US211439
申请日：1980-11-28
申请人： Kosaku Nishio
发明人： Kosaku Nishio
IPC分类号： H05G1/36 , H05G1/46 , H05G1/60 , H05G1/30
CPC分类号： H05G1/36 , H05G1/46 , H05G1/60
摘要： An X-ray cine radiography apparatus comprising: an X-ray tube for radiating X-rays toward an object under examination; an image intensifier for converting the X-rays transmitted through the object into a visual image; a cine camera for picking up the visual image; a photomultiplier for detecting a brightness of the visual image to produce an electric signal; a first potentiometer for setting an upper limit tube voltage of said X-ray tube; a second potentiometer for detecting a signal corresponding to an actual tube voltage of said X-ray tube; a comparator for comparing the output signal of said second potentiometer with that of said first potentiometer and for producing an enabling signal when the former recited output signal exceeds the latter recited output signal; means for controlling quantity of light of the visual image picked up by said cine camera in accordance with the enabling signal of said comparator; and means for adjusting the actual tube voltage in response to the output signal of said controlling means and the electric signal of said photomultiplier.
摘要翻译：一种X射线电影放射摄影装置，包括：X射线管，用于向被检查物体辐射X射线; 图像增强器，用于将透过物体的X射线转换为视觉图像; 用于拾取视觉图像的电影摄影机; 用于检测视觉图像的亮度以产生电信号的光电倍增管; 用于设定所述X射线管的上限管电压的第一电位计; 用于检测对应于所述X射线管的实际管电压的信号的第二电位计; 比较器，用于将所述第二电位器的输出信号与所述第一电位器的输出信号进行比较，并且当前述的输出信号超过后面提到的输出信号时产生使能信号; 用于根据所述比较器的使能信号控制由所述电影照相机拾取的视觉图像的光量的装置; 以及用于响应于所述控制装置的输出信号和所述光电倍增管的电信号调整实际管电压的装置。

46. 发明授权

US4335311A X-ray diagnostic apparatus with an image-intensifier TV chain 失效
标题翻译：具有图像增强电视链的X射线诊断装置
公开(公告)号：US4335311A
公开(公告)日：1982-06-15
申请号：US164053
申请日：1980-06-30
申请人： Herbert Lutz , Rolf Pfeifer
发明人： Herbert Lutz , Rolf Pfeifer
IPC分类号： H05G1/36 , H05G1/64 , H05G1/30
CPC分类号： H05G1/36 , H05G1/64
摘要： A control installation for the dose rate of the x-ray tube and, thus, for the mean brightness of the output image of the x-ray image intensifier is present. Further, switching circuitry is provided, by means of which a preprogrammed rated value for the dose rate is selected, which rated value lies below the dose rate required for a diagnosis.
摘要翻译：存在用于X射线管的剂量率以及因此对于x射线图像增强器的输出图像的平均亮度的控制装置。此外，提供开关电路，通过该开关电路选择用于剂量率的预编程额定值，该额定值低于诊断所需的剂量率。

47. 发明授权

US4171484A Automatic brightness control for direct view fluoroscopic imaging systems 失效
标题翻译：直观透视成像系统的自动亮度控制
公开(公告)号：US4171484A
公开(公告)日：1979-10-16
申请号：US925404
申请日：1978-07-17
申请人： Robert P. Hunt
发明人： Robert P. Hunt
IPC分类号： H05G1/36 , H05G1/64
CPC分类号： H05G1/64 , H05G1/36
摘要： An apparatus and method for controlling an X-ray generator in order to obtain a relatively constant output window brightness from a directly viewed X-ray image intensifier tube by introducing a small sinusoidal variation to the bias supply of the image intensifier tube and detecting only the resultantly modulated light component output from the phosphor display screen, the error signal thus derived being independent of dark current and power frequency components common to X-ray generated light output of the image intensifier tube.
摘要翻译：一种用于控制X射线发生器的装置和方法，以便通过将小的正弦变化引入到图像增强管的偏压源中，并且仅检测来自直接观察的X射线图像增强管的相对恒定的输出窗口亮度从荧光体显示屏输出的结果调制的光分量，由此导出的误差信号与图像增强管的X射线产生的光输出共同的暗电流和功率频率分量无关。

48. 发明授权

US4101776A Image intensifier T. V. fluoroscopy system 失效
标题翻译：图像增强器T.V.FLVOROSCOPY系统
公开(公告)号：US4101776A
公开(公告)日：1978-07-18
申请号：US743536
申请日：1976-11-22
申请人： Brian A. Mansfield , Royston K. Watkins
发明人： Brian A. Mansfield , Royston K. Watkins
IPC分类号： G01N23/04 , A61B6/00 , H04N7/18 , H05G1/36 , H05G1/46 , H05G1/64 , G03B41/16
CPC分类号： H05G1/64
摘要： A fluoroscopic X-ray system with automatic exposure control wherein the gain of the automatic exposure control feedback loop is increased at high X-ray intensities.

49. 发明授权

US3961173A Heat unit integrator for X-ray tubes 失效
标题翻译：用于X射线管的加热单元积分器
公开(公告)号：US3961173A
公开(公告)日：1976-06-01
申请号：US525423
申请日：1974-11-20
申请人： John T. Perry , Joel J. Schmutzer
发明人： John T. Perry , Joel J. Schmutzer
IPC分类号： H05G1/36 , G06G7/56 , H02H5/04
CPC分类号： H05G1/36
摘要： Apparatus to indicate the temperature of an X-ray tube target includes an analog storage circuit to simulate the heat energy stored. Input signals representing the current and the voltage of the electron beam in the tube are multiplied to give a signal representing the instantaneous power input. The power signal is integrated in the storage circuit to give a temperature signal representing the total heat input. The temperature signal is dissipated by a cooling curve circuit representing the heat loss with time. An indicator reads the temperature signal.Input voltage and current signals are processed to refer them to ground before multiplication. The current signal is corrected to set its zero value. The voltage signal derived from a transformer primary is corrected for transformer regulation. To eliminate spurious inputs the power signal is gated to the storage circuit only when a measured current is flowing. Multiple storage circuits indicating a number of tubes remember the temperature of their own targets while the power signal and the temperature indicator are being used with another storage circuit.
摘要翻译：用于指示X射线管靶的温度的装置包括模拟存储电路以模拟存储的热能。代表管中的电子束的电流和电压的输入信号被相乘以产生表示瞬时功率输入的信号。功率信号集成在存储电路中，给出表示总热输入的温度信号。温度信号由代表随着时间的热损失的冷却曲线电路消散。指示灯读取温度信号。

50. 发明授权

US3939352A X-ray generator provided with starting load control 失效
标题翻译： X射线发生器提供启动负载控制
公开(公告)号：US3939352A
公开(公告)日：1976-02-17
申请号：US440718
申请日：1974-02-08
申请人： Heinz Mester
发明人： Heinz Mester
IPC分类号： G05F1/10 , H05G1/30 , H05G1/36 , H05G1/46 , H05G1/56
CPC分类号： H05G1/46 , H05G1/36
摘要： In an X-ray generator, different starting powers may be selected and corresponding to each starting power a different reduction instant is measured at which time resistors are inserted into the high-voltage and the filament circuits to reduce power. Different starting powers may be associated with different organ exposures in which case the system has advantages similar to those where the load is reduced in several steps without the high cost.
摘要翻译：在X射线发生器中，可以选择不同的启动功率，并且对应于每个启动功率，测量在哪个时间将电阻器插入高电压和灯丝电路以降低功率的不同的减小时刻。不同的起动功率可能与不同的器官暴露有关，在这种情况下，系统具有类似于负载在几个步骤中降低而没有高成本的优点。

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