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11. 发明授权

US5119409A Dynamic pulse control for fluoroscopy 失效
标题翻译：用于荧光透视的动态脉冲控制
公开(公告)号：US5119409A
公开(公告)日：1992-06-02
申请号：US636085
申请日：1990-12-28
申请人： Morgan W. Nields , Menachem Assa , Mark E. Novak , Pascal Perin
发明人： Morgan W. Nields , Menachem Assa , Mark E. Novak , Pascal Perin
IPC分类号： A61B6/00 , H05G1/26 , H05G1/36 , H05G1/46 , H05G1/60
CPC分类号： H05G1/46 , H05G1/26 , H05G1/36 , H05G1/60
摘要： An apparatus and method for dynamically controlling the generation of radiation pulses during pulse-type fluoroscopic imaging. Brightness of an image produced by a pulse is detected, converted to a digital value and compared to an acceptable predetermined value range. If the brightness is not acceptable, the pulse rate is reset to a predetermined, relatively fast rate and the energy level for the next pulse adjusted up or down to increase or decrease the brightness as necessary. Once the brightness is found to be acceptable, the pulse rate is returned to the original pulse rate. If it is determined that motion is occurring, the pulse rate will increase to the relatively fast predetermined pulse rate to provide substantially real-time imaging. If the brightness becomes unacceptable for a pulse during the period of motion, the energy level for the subsequent pulse will be adjusted. This technique of pulse control effectively reduces patient dosage and operator exposure to radiation, provides substantially real-time imaging during periods of relative motion and provides rapid image stabilization times.
摘要翻译：一种用于在脉冲型荧光成像期间动态地控制辐射脉冲的产生的装置和方法。检测由脉冲产生的图像的亮度，转换为数字值并与可接受的预定值范围进行比较。如果亮度不可接受，脉冲速率被复位到预定的相对较快的速率，并且下一个脉冲的能量水平被上调或下降以根据需要增加或减少亮度。一旦发现亮度是可以接受的，则脉率被恢复到原来的脉搏率。如果确定运动正在发生，则脉率将增加到相对较快的预定脉冲速率以提供基本上实时的成像。如果在运动期间亮度变得不可接受，则后续脉冲的能级将被调整。这种脉冲控制技术有效地降低了患者剂量和操作人员对辐射的辐射，在相对运动期间提供了基本实时的成像，并提供了快速的图像稳定时间。

12. 发明授权

US5054048A X-ray radiography method and system 失效
标题翻译： X射线摄影方法和系统
公开(公告)号：US5054048A
公开(公告)日：1991-10-01
申请号：US573404
申请日：1990-08-27
申请人： Shih-Ping Wang
发明人： Shih-Ping Wang
IPC分类号： A61B6/03 , G21K1/04 , H05G1/36 , H05G1/44 , H05G1/60
CPC分类号： A61B6/032 , A61B6/06 , A61B6/4035 , A61B6/544 , G21K1/04 , H05G1/36 , H05G1/44 , H05G1/60
摘要： A method and device for producing flux equalized x-ray images for medical radiography through the use of a scanning fan shaped x-ray beam and a feedback control system which regulates the beam intensity at a multiple number of points along the fan beam to compensate for the x-ray attenuation variations of the patient.
摘要翻译：一种用于通过使用扫描扇形X射线束产生用于医学放射照相的磁通均衡x射线图像的方法和装置，以及反馈控制系统，其调节沿着扇形束的多个点处的光束强度以补偿患者的x射线衰减变化。

13. 发明授权

US5029338A X-ray diagnostics installation 失效
标题翻译： X光诊断安装
公开(公告)号：US5029338A
公开(公告)日：1991-07-02
申请号：US244343
申请日：1988-09-15
申请人： Horst Aichinger , Karlheinz Koehler
发明人： Horst Aichinger , Karlheinz Koehler
IPC分类号： H04N7/18 , A61B6/00 , G01N23/04 , H04N5/225 , H04N5/32 , H05G1/36 , H05G1/44 , H05G1/64
CPC分类号： H05G1/64 , H05G1/36 , H05G1/44
摘要： An x-ray diagnostics installation has an image intensifier/video chain for generating a television image of an examination subject. A portion of the light generated by the output screen of the x-ray image intensifier is directed to a semiconductor detector which monitors the average brightness of the output luminescent screen so that the x-ray dose can be accordingly controlled. The detector has a surface on which the entire output image of the x-ray image intensifier can be imaged, and is connected to a control unit which selects a portion of the semiconductor detector surface which will be used to generate the control signal. The detector includes a diaphragm in the form of a liquid crystal matrix, the matrix being controllable by the control unit to selectively admit or block light to the surface of the semiconductor detector, thereby controlling the regions which will be used to generate the control signal.
摘要翻译： X射线诊断装置具有用于产生检查对象的电视图像的图像增强器/视频链。由X射线图像增强器的输出屏幕产生的光的一部分被引导到半导体检测器，该半导体检测器监视输出荧光屏的平均亮度，从而可以相应地控制x射线剂量。检测器具有能够对x射线图像增强器的整个输出图像进行成像的表面，并连接到控制单元，该控制单元选择将用于产生控制信号的半导体检测器表面的一部分。检测器包括液晶矩阵形式的隔膜，该矩阵由控制单元控制，以便选择性地将光导入或阻挡到半导体检测器的表面，从而控制将用于产生控制信号的区域。

14. 发明授权

US4984258A Apparatus for slit radiography comprising discrete, controllable attenuation elements coacting with a slit diaphragm 失效
标题翻译：用于狭缝射线照相的装置，包括与狭缝光阑共同作用的离散的可控衰减元件
公开(公告)号：US4984258A
公开(公告)日：1991-01-08
申请号：US125214
申请日：1987-11-25
申请人： Hugo Vlasbloem , Simon Duinker
发明人： Hugo Vlasbloem , Simon Duinker
IPC分类号： G01N23/04 , A61B6/00 , A61B6/03 , A61B6/06 , G03B42/02 , G21K1/04 , G21K3/00 , H05G1/30 , H05G1/36 , H05G1/60 , H05G1/64
CPC分类号： A61B6/032 , A61B6/06 , A61B6/4035 , G21K1/04 , G21K1/043 , H05G1/36 , H05G1/60 , H05G1/64
摘要： An apparatus for slit radiography comprising discrete controllable attenuation elements coacting with a slit diaphragm, each attenuation element being affixed to damping means.

15. 发明授权

US4979199A Microfocus X-ray tube with optical spot size sensing means 失效
标题翻译：具有光斑尺寸感应装置的微焦X射线管
公开(公告)号：US4979199A
公开(公告)日：1990-12-18
申请号：US429743
申请日：1989-10-31
申请人： Michael K. Cueman , Lewis J. Thomas, III , Casmir R. Trzaskos , August D. Matula , Michael J. Austin
发明人： Michael K. Cueman , Lewis J. Thomas, III , Casmir R. Trzaskos , August D. Matula , Michael J. Austin
IPC分类号： G01B15/00 , H01J35/02 , H01J35/14 , H05G1/26 , H05G1/36 , H05G1/52
CPC分类号： H05G1/26 , H01J35/14 , H05G1/36 , H05G1/52
摘要： A microfocus X-ray tube has an anode that emits X-rays and, a biproduct of its waste heat, visible and near infrared light. This invention uses the biproduct light to adjust and maintain the focus of the electron beam and enhance the performance of the X-ray tube as a point source of X-rays. Only the light is reflected by a mirror along a path in which a viewport is placed in the tube envelope. An sensor, e.g., a photodiode, or television camera, is placed in the path. A display means, e.g., a television display, meter, etc., can be connected to the sensing means to display the emitting spot of the anode or the amplitude of the emission. The focus of the X-ray tube is assured by observing the biproduct light and adjusting the electron beam to either minimize the size of the glowing spot or maximizing its apparent brightness. A method for use with an emitter of first and second types of radiation comprises reflecting only the second type of radiation, and sensing the reflected radiation. A microfocus X-ray tube features a mirror for reflecting light but not X-rays. A viewport such as quartz can be disposed in the path of the reflected light in the tube envelope.
摘要翻译：微焦点X射线管具有发射X射线的阳极和其余热的可见光和近红外光的二次产物。本发明使用双色光调节和保持电子束的焦点，并增强作为X射线点的X射线管的性能。只有光沿着视口被放置在管外壳中的路径被反射镜反射。诸如光电二极管或电视摄像机的传感器被放置在路径中。诸如电视显示器，仪表等的显示装置可以连接到感测装置以显示阳极的发射点或发射的幅度。通过观察二元光并调整电子束来确保X射线管的焦点，以使发光斑点的尺寸最小化或使其表观亮度最大化。用于第一和第二类型辐射的发射器的方法包括仅反射第二类型的辐射并且感测反射的辐射。微焦点X射线管具有用于反射光而不是X射线的反射镜。诸如石英的视口可以设置在管外壳中的反射光的路径中。

16. 发明授权

US4953192A Scanning equalization radiography 失效
标题翻译：扫描均衡摄影
公开(公告)号：US4953192A
公开(公告)日：1990-08-28
申请号：US408765
申请日：1989-09-18
申请人： Donald B. Plewes
发明人： Donald B. Plewes
IPC分类号： A61B6/06 , G21K1/02 , G21K1/04 , H05G1/36 , H05G1/44 , H05G1/60
CPC分类号： A61B6/542 , A61B6/06 , A61B6/4233 , G21K1/025 , G21K1/04 , G21K1/043 , H05G1/36 , H05G1/44 , H05G1/60
摘要： A radiographic machine in which the exposure is equalized as between different areas of the image plane so as to enhance high spatial frequency features of the image and suppress low spatial frequency features and achieve other benefits as well. A fan beam which is wide enough to encompass the object being imaged is swept across the object and segments of that beam are individually pulse width modulated at each of a number of sampling intervals during the sweep by monostable or bistable shutter pins which either completely block or completely uncover the sectors which they control. An alternate embodiment adds beam width modulation as well, by making the shutter pins either completely block their sectors of uncover them only to the degree necessary for beam width modulation.
摘要翻译：其中曝光被平均在像平面的不同区域之间以便增强图像的高空间频率特征并抑制低空间频率特征并且实现其它益处的放射照相机。宽度足以包围正在成像的物体的扇形光束被扫过物体，并且在扫描期间，通过单稳态或双稳态快门引脚在多个采样间隔的每一个处对该光束进行单独的脉冲宽度调制，其完全阻塞或彻底揭露他们控制的部门。另一个实施例也是通过使快门引脚完全阻挡它们的扇区以将其发现的波长宽度调制所必需的程度来增加波束宽度调制。

17. 发明授权

US4947416A Scanning equalization radiography with stationary equalization detector 失效
标题翻译：使用固定均衡检测器扫描均衡射线照相
公开(公告)号：US4947416A
公开(公告)日：1990-08-07
申请号：US260769
申请日：1988-10-21
申请人： James A. McFaul , Gary S. Keyes , David L. McDaniel
发明人： James A. McFaul , Gary S. Keyes , David L. McDaniel
IPC分类号： A61B6/00 , A61B6/03 , A61B6/06 , G01T20060101 , G21K1/04 , H01J47/02 , H05G1/00 , H05G1/36
CPC分类号： A61B6/032 , A61B6/06 , A61B6/4035 , G21K1/04 , H01J47/02 , A61B6/4291
摘要： A scanning type radiographic imaging system is disclosed which employs novel means to produce comparable radiation intensity in the object regions being radiographed. Such result is achieved with variable radiation attenuating elements having their attenuation controlled during this scanning process with novel feedback control means. The feedback control is produced with a stationary detection unit having circuit means which generates the electrical control signals.

18. 发明授权

US4905150A X-ray diagnostics installation with mean parenchyma dose calculator 失效
标题翻译：平均薄壁剂量计算器的X射线诊断安装
公开(公告)号：US4905150A
公开(公告)日：1990-02-27
申请号：US261084
申请日：1988-10-24
申请人： Horst Aichinger , Karlheinz Koehler
发明人： Horst Aichinger , Karlheinz Koehler
IPC分类号： G01N23/04 , A61B6/00 , A61B6/10 , A61B10/00 , A61B17/00 , G01T1/161 , G06Q50/00 , H05G1/26 , H05G1/36 , H05G1/46
CPC分类号： A61B6/502 , H05G1/26 , H05G1/36 , H05G1/46 , A61B2017/00716 , A61B2017/00725 , A61B6/583
摘要： An x-ray diagnostics installation, of the type suitable for mammography, includes a calculator, such as a computer, which calculates the mean parenchyma dose based on a prescribed relationship from exposure values. The mean parenchyma dose can be read from the computer by a printer to obtain a permanent record.
摘要翻译：适用于乳房X线照相术的X射线诊断装置包括计算器，例如计算机，其根据曝光值根据规定的关系计算平均实质剂量。可以通过打印机从计算机读取平均实质剂量以获得永久记录。

19. 发明授权

US4845771A Exposure monitoring in radiation imaging 失效
标题翻译：辐射成像中的曝光监测
公开(公告)号：US4845771A
公开(公告)日：1989-07-04
申请号：US67923
申请日：1987-06-29
申请人： Nicholas C. Wislocki , Susan L. Fike
发明人： Nicholas C. Wislocki , Susan L. Fike
IPC分类号： H05G1/30 , H05G1/36 , H05G1/42 , H05G1/44
CPC分类号： H05G1/30 , H05G1/36 , H05G1/42 , H05G1/44
摘要： A system and method for monitoring progress of a radiographic exposure is disclosed. The system samples the cumulative radiation as an exposure progresses, and aborts the exposure if the rate of rise in cumulative radiation is insufficiently low to cause a good exposure. Similarly, the system will terminate an exposure early, at a properly timed out interval, even if the radiation accumulation rises excessively fast due to an erroneous system set up.
摘要翻译：公开了一种用于监测放射照相曝光进展的系统和方法。当曝光进行时，系统对累积辐射进行采样，如果累积辐射的上升速率不足以导致良好的曝光，则中断曝光。类似地，即使由于错误的系统设置而导致的辐射积聚过快，系统将以适当的超时间隔提前终止曝光。

20. 发明授权

US4819259A Rotary anode type x-ray apparatus 失效
标题翻译：旋转阳极型x射线装置
公开(公告)号：US4819259A
公开(公告)日：1989-04-04
申请号：US909130
申请日：1986-09-19
申请人： Shigeru Tanaka
发明人： Shigeru Tanaka
IPC分类号： H05G1/36 , H05G1/46 , H05G1/66 , H01J35/10 , H01J35/26
CPC分类号： H05G1/46 , H05G1/36 , H05G1/66
摘要： A rotary anode type X-ray apparatus includes an arithmetic unit for calculating the optimum number of revolutions of the anode, on the basis of the previously measured and stored temperature-characteristic data of the X-ray tube, at least one of the tube voltages applied to the X-ray tube, the X-ray radiation time, and the tube current. According to frequency of revolution data derived from the arithmetic unit, the motor controller drives the motor to rotate the rotary anode at an appropriate number of revolutions. This number is determined by the X-ray tube drive conditions, including the tube current.
摘要翻译：旋转阳极型X射线装置包括：运算单元，用于根据先前测量并存储的X射线管的温度特性数据计算阳极的最佳转数，至少一个管电压应用于X射线管，X射线辐射时间和管电流。根据从运算单元得到的转速的数据，马达控制器驱动马达以适当的转数旋转旋转阳极。该数量由X射线管驱动条件决定，包括管电流。

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