X-RAY APPARATUS HAVING A COMPOSITE FIELD OF VIEW

    公开(公告)号:US20200008768A1

    公开(公告)日:2020-01-09

    申请号:US16469679

    申请日:2017-12-12

    Abstract: Medical radiography requires specialist control of radiography equipment to achieve good imaging results. Typical errors that can occur consist of an inappropriate field of view being accidentally applied. This results in a “cropping effect” in which portions of the region of interest of a patient which would be of clinical use are omitted from the image. Conventionally, the only solution is to re-take the entire image with a more appropriate (and inevitably larger) field of view selected. This is undesirable, because it might require recall of the patient from another location, and the patient will be subject to two exposures, thus undesirably increasing their X-ray dosage. The present application proposes to use an anatomical atlas to analyse an X-ray image output from an initial exposure, in particular to assess whether significant anatomical elements are missing from the image. If elements are missing, the field of view of the X-ray imager is recalibrated, using collimation or pan/tilt adjustments, for example. A subsequent X-ray image is obtained, and combined with the initial image, to provide an output image. Because only a small area of the region of interest may subsequently need to be exposed, a smaller additional dose results.

    APPARATUS FOR THE DETECTION OF OPACITIES IN X-RAY IMAGES

    公开(公告)号:US20190254618A1

    公开(公告)日:2019-08-22

    申请号:US16347825

    申请日:2017-10-26

    Abstract: The present invention relates to an apparatus for the detection of opacities in X-ray images. It is described to provide (210) an analysis X-ray image of a region of interest of an analyzed body part. A model of a normal region of interest is provided (220), wherein the model is based on a plurality of X-ray images of the region of interest. At least one abnormality is detected (230) in the region of interest of the analyzed body part, the detection comprising comparing the analysis X-ray image of the region of interest and the model of the normal region of interest. Information is output (240) on the at least one abnormality.

    VISUALIZATION OF PROJECTION X-RAY IMAGE

    公开(公告)号:US20170091928A1

    公开(公告)日:2017-03-30

    申请号:US15255249

    申请日:2016-09-02

    Abstract: A system and method are provided for obtaining an improved visualization of bone objects comprised in a projection X-ray image. The projection X-ray image comprises bone objects which at least in part overlap. According to the system and method, a number of the bone objects are delineated by a contour, thereby obtaining a number of delineated bone objects. For each of the number of delineated bone object, a bone suppression technique is applied to the image to obtain respective bone image data individually showing the respective delineated bone object while suppressing shadows of obstructing objects. The bone image data generated for each of the number of delineated bone objects is used to generate an output image in which the bone objects do not overlap. An advantage of the system and method is that a non-overlapping, shadow-suppressed, presentation of the bone objects may be created from an X-ray image which was obtained by projectional radiography.

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