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公开(公告)号：EP2392023A2
公开(公告)日：2011-12-07
申请号：EP10702539.7
申请日：2010-01-27
申请人： CXR Limited
摘要： An electron source (25) for an X-ray scanner comprises an emitter support block (117), an electron-emitting region (118) formed on the support block and arranged to emit electrons, an electrical connector (124) arranged to connect means (121) arranged to heat the support block. The document further discloses a control system (600) for an X-ray scanner.
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公开(公告)号：EP1337107A3
公开(公告)日：2004-01-02
申请号：EP03076174.6
申请日：1996-11-21
CPC分类号： A61B6/4233 , A61B6/4488 , A61B6/502 , A61B6/548 , A61B6/581 , H04L67/12 , H04N5/32 , H04N5/3415 , H05G1/44 , H05G1/46 , H05G1/60
摘要： An improved x-ray image sensor system and method enables the use of an uncooled or only slightly cooled CCD array (18a) within a standard size x-ray film cassette (10). The sensor system enables the provision of a number of advanced functions such as remote diagnostic capability, variable image resolution, real-time exposure control, automatic x-ray detection, a low-power "sleep" mode, and automatic, closed loop optimization of image quality.
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公开(公告)号：EP0782375B1
公开(公告)日：2003-04-23
申请号：EP96309554.2
申请日：1996-12-30
发明人： Chao, Yong-Sheng
CPC分类号： A61B6/482 , A61B6/06 , A61B6/4035 , A61B6/405 , A61B6/4241 , G01T1/1648 , G06T11/006 , G06T2211/408 , G21K1/025 , H05G1/60
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公开(公告)号：EP0515641B1
公开(公告)日：2003-02-05
申请号：EP92901555.0
申请日：1991-11-12
发明人： WHITING, James S. , EIGLER, Neal L.
CPC分类号： A61B6/481 , A61B6/504 , G06T7/20 , G06T7/246 , G06T7/70 , G06T2207/30101 , H04N5/3205 , H04N5/325 , H05G1/60
摘要： A method of displaying details of a coronary artery lesion in a cineangiogram, by adjusting each frame of the cineangiogram so that the lesion is continually displayed at a fixed location on a display. The remaining cardiac anatomy appears to move, in background, past a stationary arterial segment, thus making the displayed arterial segment easier to identify and to examine by medical personnel. Cineangiographic image frames are digitized and processed by a processor (201) and the image frames are digitally shifted to place the arterial segment in substantially the same viewing location in each frame. Sequential image frames may be presented to the viewer as a stereoscopic pair, to produce pseudostereopsis. The arterial segment appears to the viewer in foreground, as if it was floating in front of the remaining cardiac anatomy. Image frames may be further processed to aid examination by medical personnel. The processor may make quantitative measurements of the cineangiogram and may display results of those measurements to aid review of the cineangiogram. Frames may be averaged to reduce quantum noise and to blur any structure noise; frames may be compared with prior cineangiograms to increase clarity or contrast. Coordinate adjustments for a cineangiogram may help guide therapeutic procedures, or may help enhance other imaging procedures such as fluoroscopy.
摘要翻译： 通过调整电影照像的每一帧以使病变在显示器上的固定位置处不断显示，来显示电影照相中的冠状动脉病变的细节的方法。 剩余的心脏解剖似乎在背景中移动通过静止的动脉段，从而使显示的动脉段更容易识别并由医务人员进行检查。 血管造影图像帧由处理器数字化和处理，并且图像帧被数字移位以将动脉段在每个帧中基本上相同的观察位置。 顺序图像帧可以作为立体对呈现给观看者，以产生伪造图。 动脉段在前景中出现在观察者身上，好像它悬浮在剩下的心脏解剖结构的前面。 可以进一步处理图像帧以帮助医务人员进行检查。 处理器可以进行电影图的定量测量，并且可以显示这些测量的结果以帮助检查电影图。 可以对帧进行平均以减少量子噪声并模糊任何结构噪声; 可以将帧与先前的电影显像进行比较以增加清晰度或对比度。 电影照相机的坐标调整可能有助于指导治疗过程，或有助于增强其他成像过程，如荧光透视。
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公开(公告)号：EP0776570B1
公开(公告)日：2001-04-11
申请号：EP96913683.7
申请日：1996-05-28
CPC分类号： H04N5/32 , H04N5/3415 , H05G1/60
摘要： An image pick-up apparatus (1) for picking up a plurality of sub-images and combining them so as to form a composite image, including a correction unit (5) for correcting brightness values of the composite image. The correction unit (5) includes a selection unit (6) for selecting bright and dark parts from the sub-images. There is also provided an arithmetic unit (10) for deriving a gain correction factor from the bright parts and an offset correction term from the dark parts. The correction unit (5) also includes a multiplier unit (8) and an adder unit (9) for multiplying signal levels of a sub-image signal by the gain correction factor and for adding the offset correction term thereto. The image pick-up apparatus is used in an X-ray examination apparatus (20) for picking up an optical image on the exit window (32) of an X-ray image intensifier (24) and for supplying an electronic image signal for a high-resolution composite image so that image information in a medical X-ray image with small details can be suitably reproduced.
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公开(公告)号：EP0789535A4
公开(公告)日：1998-01-21
申请号：EP95935222
申请日：1995-09-29
申请人： ANALOGIC CORP
发明人： WEEDON HANS
摘要： In a medical imaging system having a data acquisition system (DAS) (84) that provides both image data and non-image data to a main computer of the medical imaging system (20) via a plurality of DAS channels, wherein the DAS channels convey mostly image data, a method and apparatus is provided for selectively sampling and multiplexing auxiliary (AUX) data, such as system monitoring and system diagnostic data, and providing the AUX data along with the image data to a bank of analog-to-digital converters (80). A plurality of programmable sampling and multiplexing modes are provided so as to ensure that each AUX data signal is sampled at a rate that is appropriate to a phase of operation of the medical imaging system, such as system monitoring, or system diagnostics.
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7.发明公开Method and system for detecting and correcting erroneous exposures generated during x-ray imaging 失效通过X射线的装置的方法和设备进行检测和错误曝光校正在成像期间
公开(公告)号：EP0809422A1
公开(公告)日：1997-11-26
申请号：EP97303383.0
申请日：1997-05-19
摘要： The present invention discloses a method and system for detecting and correcting an erroneous exposure generated during x-ray imaging of a patient (14) In the present invention, x-ray imaging settings for imaging the patient are selected. X-ray beam quality and x-ray quantity values are generated from the selected x-ray imaging settings. An exposure rate is predicted from the x-ray beam quality and x-ray quantity values. The patient (14) is then exposed to an x-ray beam having the generated x-ray beam quality and x-ray quantity values. The total exposure is then determined and compared to the predicted exposure rate. The comparison is then used to determine if the patient is being exposed at an erroneous level. If the exposure is at a correct level, then the exposure is completed. However, if the exposure is not at a correct level, then the exposure is stopped and adjusted to a new exposure level.
摘要翻译： 本发明盘松动用于检测的方法和系统和用于成像患者的患者（14）在本发明的X射线成像过程中产生的错误的曝光校正，x射线成像设置被选择。 X射线束的质量和x射线数量值是从所选择的x射线成像的设置产生。 曝光的速率被从x射线束质量和x射线数量值来预测。 然后患者（14）暴露于具有所产生的x射线束的质量和x射线数量值的x射线束。 总曝光然后确定性开采和相比于预测的暴露率。 如果患者在错误的电平被暴露的比较然后被用于确定性地矿。 如果曝光是在一个正确的级别，然后完成曝光。 然而，如果曝光不正确的水平，那么曝光被停止，并调整到一个新的暴露水平。
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公开(公告)号：EP0793901A1
公开(公告)日：1997-09-10
申请号：EP95935194.0
申请日：1995-09-29
申请人： ANALOGIC CORPORATION
发明人： DOBBS, John , WEEDON, Hans
CPC分类号： H05G1/60 , A61B6/032 , A61B6/5258 , H05G1/26
摘要： A monitoring detector assembly (70) is positioned outside the scanning plane of a CT scanner to insure detection of unattenuated x-rays from the x-ray source (26) of the scanner. The monitoring detector assembly preferably provides a sequence of monitor detection measurements simultaneous with the sequential acquisition of the image data from the image detectors (28) during each projection of the scan by a filtered CT scanner. The image data are monitored using the closest in time monitor detection measurement.
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9.发明公开Adaptive X-ray brightness and display control for a medical imaging system 失效亮度的自适应控制和X射线的用于医学成像系统中的显示
公开(公告)号：EP0779770A1
公开(公告)日：1997-06-18
申请号：EP96308945.3
申请日：1996-12-10
摘要： An x-ray imaging system (40) includes a source of x-rays (42), a video camera (52) which produces an image signal formed by x-ray attenuation values, an image signal processor (72) and a video monitor (74) for displaying the x-ray image. The system also has an automatic image control (56) that includes a peak detector (60), an average brightness detector (58) and a transfer function generator (62) for the image processor. The peak detector (60) receives the image signal and produces a video gain control signal for controlling the video camera in response to a comparison of a peak level of the image signal to a peak reference level. The average brightness detector (58) employs the image signal to produce a feedback signal (66) which controls by the source of x-rays. The transfer function generator (62) produces a histogram of intensity levels in the image signal which histogram forms a look-up table (76) that is used by the image processor to transform the image signal into the adjusted image signal for display.
摘要翻译： 一种X射线成像系统（40）包括X射线源（42），摄像机（52），它产生由x射线衰减值，图像信号处理器（72）形成的图像信号和视频显示器 （74），用于显示所述X射线图像。 因此，该系统具有自动图象控制（56）没有包括关于平均亮度检测器（58）和用于图像处理器的传递函数发生器（62）的峰值检测器（60）。 峰值检测器（60）接收图像信号，并产生一个视频增益控制信号，用于响应于图像信号的峰值电平的至峰值基准电平的比较控制所述视频摄像机。 平均亮度检测器（58）采用的图像信号，以产生通过X射线源控制的反馈信号（66）。 传递函数发生器（62）产生的图像信号中的强度水平哪直方图查找表（76）那样，使用由图像处理器将所述图像信号变换成用于显示调整后的图像信号形式的直方图。
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公开(公告)号：EP0587648B1
公开(公告)日：1997-02-12
申请号：EP92911202.7
申请日：1992-06-01
发明人： NELVIG, Per
摘要： The present invention demonstrates a method and a device in the technique of using an image sensing member, preferably a CCD cell instead of a film sensitive to X-ray radiation. The method and the device is applicable to a general X-ray arrangement without any necessary direct connection between the image sensing member and the X-ray arrangement has to be present by using a number of detector points for X-ray radiation at or in the CCD cell. Additionally is demonstrated a method and a device resulting in minimizing of the radiation dose to exactly what is needed for exact imaging exposure of an image, which according to the present invention implies that more images may be obtained within a same total normal radiation dose.
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