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公开(公告)号：US5539798A
公开(公告)日：1996-07-23
申请号：US187064
申请日：1994-01-27
摘要： An X-ray radiographic apparatus comprises an X-ray tube having an X-ray focal point for radiating X-ray beams toward an object being examined, an X-ray beam limiting device incorporating a limiting member making an aperture for limiting the X-ray beams passing therethrough, the aperture being adjustable in size, and an element for obtaining a surface image of the object through the aperture. The obtained surface image is utilized in various aspects. One aspect is control of the size of the aperture by comprising an element for forming a frame image representing the aperture in accordance with a given size information, an element for displaying the surface image on which the frame image is superposed, a specifying element for being able to specify by hand a size of the frame image by giving the size information to the frame image forming element, and an element for driving the limiting member so that the size of the aperture is brought into a size specified by the aperture displayed on the surface image displaying element. Another aspect concerns positioning using a reference image and automatic exposure control.
摘要翻译： X射线摄影装置包括X射线管，X射线管具有X射线焦点，用于将X射线束照射到被检查物体; X射线束限制装置，其包括限制构件， 射线束穿过其中，孔径可调节，以及用于通过孔获得物体的表面图像的元件。 获得的表面图像在各个方面被使用。 一个方面是通过包括用于根据给定的尺寸信息形成表示孔径的框架图像的元件，用于显示其上叠加了框架图像的表面图像的元件，用于形成所述孔的大小的指定元件 能够通过将尺寸信息赋予帧图像形成元件来手动指定帧图像的大小，以及用于驱动限制元件的元件，使得光阑的尺寸被带入由在 表面图像显示元件。 另一方面涉及使用参考图像和自动曝光控制的定位。
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公开(公告)号：US5546440A
公开(公告)日：1996-08-13
申请号：US299969
申请日：1994-09-02
摘要： An X-ray diagnostic apparatus repeatedly radiates pulse-like X-rays, repeatedly images X-rays passing through an object to be examined at a predetermined frame period, and sequentially displays a plurality of images thus obtained repeatedly. In this invention, the exposure dose can be reduced since the number of X-ray irradiation times per unit time is set to be smaller than the number of frames to be imaged per unit time.
摘要翻译： X射线诊断装置重复地照射脉冲状X射线，以预定的帧周期重复地将经过被检查物体的X射线图像重复地依次显示如此获得的多个图像。 在本发明中，由于每单位时间的X射线照射次数设定为小于每单位时间成像的帧数，所以可以减少曝光量。
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公开(公告)号：US5557542A
公开(公告)日：1996-09-17
申请号：US289136
申请日：1994-08-11
CPC分类号： G11B27/002 , G11B31/00 , G11B15/02 , G11B2220/41 , G11B2220/90
摘要： The connections among a plurality of dynamic image generating means, a plurality of work stations, a plurality of temporary storage means and a plurality of video tape recorders are switched from one to another a matrix switcher, so that the number of the video tape recorders may be smaller than the total number of the dynamic image generating means and the work stations. The dynamic image generating means are connected via the temporary storage means to the video tape recorders, and the video tape recorders are connected via the temporary storage means to the work stations, so that wait time at the time of image recording or reproduction can be shortened.
摘要翻译： 多个动态图像产生装置，多个工作站，多个临时存储装置和多个录像机之间的连接从一个矩阵切换器切换到另一个，使得录像机的数量可以 小于动态图像生成单元和工作站的总数。 动态图像产生装置通过临时存储装置连接到录像机，并且磁带录像机经由临时存储装置连接到工作站，使得可以缩短图像记录或再现时的等待时间 。
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公开(公告)号：US5680471A
公开(公告)日：1997-10-21
申请号：US281037
申请日：1994-07-27
CPC分类号： G06T7/0083 , G06T7/0012 , G06T7/60 , A61B6/4225 , A61B6/503 , G06T2207/10121 , G06T2207/20144 , G06T2207/30048
摘要： An image processor acquires an image including a desired portion of an object to be examined. An image memory temporarily stores the acquired image, and an outline is extracted from an area of interest from the desired portion of the object. The outline is extracted by dividing the image stored in the image memory into plural areas using parallel lines, and a threshold value is set for each of the plural divided areas. Points having values exceeding the threshold values are connected.
摘要翻译： 图像处理器获取包括待检查对象的期望部分的图像。 图像存储器临时存储所获取的图像，并且从目标的期望部分从感兴趣区域提取轮廓。 通过使用平行线将存储在图像存储器中的图像划分成多个区域来提取轮廓，并且为多个分割区域中的每一个设置阈值。 值超过阈值的点被连接。
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