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公开(公告)号：US4559557A
公开(公告)日：1985-12-17
申请号：US616206
申请日：1984-06-01
申请人： Gary S. Keyes , Barry F. Belanger , Anne L. Hall
发明人： Gary S. Keyes , Barry F. Belanger , Anne L. Hall
CPC分类号： A61B6/482 , A61B6/4042 , A61B6/481 , A61B6/504 , G06T5/50 , A61B6/4035
摘要： In digital subtraction angiography a low X-ray energy temporal subtraction image is displayed on a video monitor. Regions in the temporal image frame that contain motion artifacts are outlined by using a cursor. The coordinates of the pixels in the defined outlined region are stored in a processor memory. The data for a related hybrid subtraction image are developed and stored. The processor then effects substitution of the hybrid subtraction image pixels, that fall within the same defined region, into the temporal subtraction image. The combined image data are transferred to a display controller memory which controls display of the combined image on a monitor. A method and means are provided for automatically determining the optimum value of the weighting coefficient applied to the high energy temporal subtraction image that results in the most complete cancellation of everything in the two images except the contrast medium filled blood vessel when the high and low energy temporal images are subtracted. A method and means are provided for altering the gain and offset of the hybrid image data in such manner as to match the hybrid image contrast and brightness with that of the temporal subtraction image.
摘要翻译： 在数字减影血管造影中，低X射线能量时间减影图像显示在视频监视器上。 通过使用光标来概述包含运动伪影的时间图像帧中的区域。 所定义的区域中的像素的坐标存储在处理器存储器中。 开发和存储相关混合减影图像的数据。 然后，处理器将落在相同的限定区域内的混合减影图像像素替换成时间减影图像。 组合的图像数据被传送到显示控制器存储器，其控制监视器上的组合图像的显示。 提供了一种方法和装置，用于自动确定应用于高能量时间减影图像的加权系数的最佳值，其导致除了造影剂填充血管之外的两个图像中的全部消除，当高和低能量 减去时间图像。 提供一种方法和装置，用于以混合图像对比度和亮度与时间相减图像匹配的方式改变混合图像数据的增益和偏移。
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公开(公告)号：US4727562A
公开(公告)日：1988-02-23
申请号：US776394
申请日：1985-09-16
申请人： Barry F. Belanger
发明人： Barry F. Belanger
IPC分类号： H04N7/18 , A61B6/00 , A61B6/03 , B65C9/18 , G01N23/04 , G21K1/02 , H05G1/00 , H05G1/60 , G01N23/02
CPC分类号： H05G1/60 , A61B6/00 , A61B6/5282 , G21K1/025 , A61B6/4291
摘要： A scatter radiation compensation method for use in a medical diagnosis x-ray imaging system employs the use of an attenuating material placed in an x-ray beam to attenuate a portion of the beam such that the in-line component of the beam is reduced in the attenuated area. In one embodiment, an additional image is then taken utilizing an attenuator through out the full area of the beam to provide an image indicative of in-line components of the x-ray beam. The difference in image intensity between the two images is then computed to determine the scatter component of intensity and that intensity is thereafter substracted from the overall intensity obtained in a medical diagnostic image to obtain an image with the scattering effects removed. In one embodiment, the attenuating objects are plural spaced objects located at predetermined positions in the image. In a further embodiment, the image is taken through an attenuating object covering the entire beam, the object having a plurality of holes located at spaced intervals for permitting a portion of the beam to pass through unattenuated. In either embodiment, the component of scattering is determined by comparing the relative intensity values between the images developed with an object passing a portion of the beam unattenuated and an object passing an attenuated beam.
摘要翻译： 用于医学诊断x射线成像系统的散射辐射补偿方法采用放置在x射线束中的衰减材料来衰减光束的一部分，使得光束的在线分量减小 衰减面积。 在一个实施例中，然后利用衰减器通过波束的整个区域来获取附加图像，以提供指示x射线束的直线分量的图像。 然后计算两个图像之间的图像强度的差异以确定强度的散射分量，然后从医学诊断图像中获得的总体强度减去强度，以获得去除了散射效应的图像。 在一个实施例中，衰减对象是位于图像中的预定位置的多个间隔物体。 在另一个实施例中，通过覆盖整个光束的衰减物体拍摄图像，物体具有以间隔开的间隔设置的多个孔，以允许光束的一部分通过未衰减。 在任一实施例中，通过比较通过未衰减的光束的一部分的物体和通过衰减光束的物体显影的图像之间的相对强度值来确定散射分量。
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3.发明授权Method and apparatus for correlating video and film images produced from electronic data 失效用于将从电子数据产生的视频和电影图像相关联的方法和装置
公开(公告)号：US4730214A
公开(公告)日：1988-03-08
申请号：US907454
申请日：1986-09-15
CPC分类号： H04N5/87
摘要： A system for transferring electronic image data to film which provides correlation or matching between an image as viewed on a video monitor and an image viewed on film. Apparatus is disclosed for measuring image intensity on a video monitor and converting the measured intensity to electronic signals. The image intensity on film under controlled lighting is measured and signals representative of film density provided. The signals obtained by the two measurements are compared and any difference is used to vary a film writing system in a manner to minimize the difference.
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公开(公告)号：US4700058A
公开(公告)日：1987-10-13
申请号：US761439
申请日：1985-08-01
CPC分类号： H04N1/4078
摘要： An imaging system for generating a image on film from video image data incorporates feedback control techniques to provide control of film density. The system includes variable gain amplifiers responsive to light intensity output of a film writing device for maintaining the output at a desired set level. In addition, the system includes apparatus and a method for monitoring the density of film images produced by the system and for utilizing the monitored values to modify the system transfer function in a direction to effect a change in the film density towards a desired value.
摘要翻译： 用于从视频图像数据生成胶片上的图像的成像系统包括反馈控制技术以提供膜密度的控制。 该系统包括响应于胶片写入装置的光强度输出的可变增益放大器，用于将输出保持在期望的设定电平。 此外，该系统包括用于监视由系统产生的胶片图像的密度的装置和方法，并且用于利用所监视的值来修改系统传递函数，以便影响胶片密度朝期望值的变化。
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5.发明申请公开(公告)号：US20080063144A1
公开(公告)日：2008-03-13
申请号：US11470696
申请日：2006-09-07
申请人： Barry F. Belanger
发明人： Barry F. Belanger
IPC分类号： H05G1/70
CPC分类号： A61B6/02 , A61B5/0402 , A61B6/4441 , A61B6/5247 , A61B8/12 , A61B8/5238
摘要： A system for arranging a plurality of visual displays communicated from a plurality of data acquiring sources for illustration on a plurality of displays fields of an at least one monitor is provided. The system includes a controller in communication with each of the plurality of data acquiring sources and the at least one monitor. The controller includes a processor operable to execute a plurality of programming instructions stored in a memory. The programming instructions include the acts of receiving a predefined arrangement of the series of visual displays for simultaneous illustration in the series of display fields of the at least one monitor, storing the predefined arrangement in the memory, and communicating the plurality of visuals displays from the series of data acquiring sources to the series of display fields, respectively, of the least one monitor in accordance to the predefined arrangement stored in the memory.
摘要翻译： 提供了一种用于布置从多个数据获取源传送的多个视觉显示器的系统，用于说明在至少一个监视器的多个显示器字段上。 该系统包括与多个数据采集源和至少一个监视器中的每一个进行通信的控制器。 控制器包括可操作以执行存储在存储器中的多个编程指令的处理器。 编程指令包括接收一系列视觉显示器的预定布置的动作，用于同时示出至少一个监视器的一系列显示区域，将预定义的布置存储在存储器中，以及将多个视觉显示器从 根据存储在存储器中的预定布置，分别将至少一个监视器的一系列显示区域的数据采集源的一系列数据采集源。
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6.发明授权
公开(公告)号：US4766503A
公开(公告)日：1988-08-23
申请号：US887702
申请日：1986-07-21
CPC分类号： H04N1/4078 , H04N5/87 , H04N9/82
摘要： An imaging system for generating a color image on film from electronic video image data incorporates feedback control techniques to provide control of film density. The system includes variable gain amplifiers responsive to light intensity output of a film writing device for maintaining the output at a desired set level. In addition, the system includes apparatus and a method for monitoring the density of film images produced by the system and for utilizing the monitored values to modify the system transfer function in a direction to effect a change in the film density towards a desired value.
摘要翻译： 用于从电子视频图像数据产生胶片上的彩色图像的成像系统包括反馈控制技术以提供膜密度的控制。 该系统包括响应于胶片写入装置的光强度输出的可变增益放大器，用于将输出保持在期望的设定电平。 此外，该系统包括用于监视由系统产生的胶片图像的密度的装置和方法，并且用于利用所监视的值来修改系统传递函数，以便影响胶片密度朝期望值的变化。
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公开(公告)号：US5012504A
公开(公告)日：1991-04-30
申请号：US456447
申请日：1989-12-26
CPC分类号： H05G1/36 , H04N5/2351 , H04N5/32 , H05G1/60
摘要： The brightness of an X-ray video image during fluorography is maintained at a substantially constant level by a control circuit which varies the X-ray dose in relation to changes in the average brightness of the X-ray image. Selected picture elements of the image which lie within a defined region in the image and which have a brightness above a given level are used to derive the average X-ray image brightness. The brightness of the selected picture elements are summed and the number of such picture elements counted. The summation of the brightness and the picture element count are both scaled by a factor of 2.sup.n to reduce the size of the numbers of the complexity of the averaging circuitry. The scaled brightness summation is divided by the scaled picture element count and the result is stored as the average X-ray image brightness.
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公开(公告)号：US5003572A
公开(公告)日：1991-03-26
申请号：US505792
申请日：1990-04-06
IPC分类号： A61B6/00 , G09G5/00 , G09G5/10 , G09G5/36 , H04N5/235 , H04N5/32 , H04N7/18 , H05G1/36 , H05G1/46 , H05G1/60
摘要： The brightness of an X-ray video image during fluorography is maintained at a substantially constant level by a control circuit which varies the X-ray dose in relation to changes in the average brightness of the X-ray image. As the X-ray system approaches the limits of its imaging capability, varying the X-ray dose alone may not yield the desired brightness level. At this point, the gain applied to the video signal is increased to improve the brightness. A linear brightness taper function is used such that, as the level of video gain required to maintain constant brightness increases, the actual video gain increases by a smaller proportional amount. This function results in the brightness of the video image decreasing somewhat as the video gain is required to provide a greater degree of brightness compensation. This reduction in brightness not only provides a visual indication to the image observer that the system is approaching the imaging limits, but also creates an illusion that noise artifacts in the image are not intensifying as the video gain increases.
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公开(公告)号：US4541106A
公开(公告)日：1985-09-10
申请号：US582558
申请日：1984-02-22
摘要： For hybrid digital subtraction angiography mask x-ray images are made at low and high x-ray tube anode kVp. Both exposures are terminated by AEC and the exposure times are calculated and stored and used to govern the times of a subsequent run sequence of alternate low and high energy pre-contrast and post-contrast exposure images. The data for the mask and subsequent images are stored individually on magnetic disk. A TV camera receives optical versions of the images. Its target is scanned or read out during a TV frame time between the end of a low energy exposure and the start of a high energy exposure. After the low energy mask exposure time is determined an anticipation or delay time is calculated and the low energy exposures in the run sequence are shifted from the vertical blank pulse preceding the frame in which the exposure starts by the delay time so all low energy exposures terminate coincident with the blanking pulse that precedes the read out frame. Since the high energy exposures are started at the end of the readout, minimum time between low and high exposures is achieved. High kVp is fixed. Low kVp and tube MA are selectable. High MA that the tube target can withstand thermally is calculated and adjusted so it will not result in excessive tube target bulk or focal spot temperature.
摘要翻译： 对于混合数字减影血管造影掩模，X射线图像是在低和高x射线管阳极kVp下制成的。 两个曝光由AEC终止，并且计算和存储曝光时间并用于控制替代的低能量和高能量对比度和对比度后曝光图像的后续运行序列的时间。 掩模和后续图像的数据分别存储在磁盘上。 电视摄像机接收光学版本的图像。 在低能量曝光结束和高能量曝光开始之间的电视帧时间期间，其目标被扫描或读出。 在确定低能量掩模曝光时间之后，计算预期或延迟时间，并且运行序列中的低能量曝光从曝光开始的帧之前的垂直空白脉冲移位延迟时间，从而所有低能量曝光终止 与读出帧之前的消隐脉冲一致。 由于在读出结束时开始高能量曝光，所以实现了低曝光和高曝光之间的最小时间。 高kVp固定。 低kVp和管MA可选。 计算和调整管目标可承受热量的高MA，因此不会导致管靶体积或焦点温度过高。
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