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    • 8. 发明申请
    • METHOD AND APPARATUS FOR ACQUIRING FUSION X-RAY IMAGES
    • 用于获取融合X射线图像的方法和装置
    • US20100074504A1
    • 2010-03-25
    • US12532459
    • 2008-03-14
    • Antonius J.C. BruijnsRonaldus P.J. HermansPeter M.J. RongenJarl J.P. BlijdHerman StegehuisJoerg Bredno
    • Antonius J.C. BruijnsRonaldus P.J. HermansPeter M.J. RongenJarl J.P. BlijdHerman StegehuisJoerg Bredno
    • G06K9/00G01N23/04
    • A61B6/504A61B6/481A61B6/482A61B6/503A61B6/5235A61B6/541
    • A method for acquiring fusion images of a periodically moving body organ and an apparatus adapted to implement such method is described. In a preferred embodiment of the method, X-rays are irradiated to the body organ and a multiplicity of mask images is acquired by X-ray detection at a high image acquisition rate of at least 60 frames per second. Then, contrast medium is injected into vessels of the body organ and subsequently at least one contrast image of the body organ with the contrast medium included in the vessels is acquired by X-ray detection. A matching image from the multiplicity of mask images is determined which has been acquired at substantially the same stage of the movement of the body organ as the contrast image. By calculating the difference between the matching mask image and the at least one contrast image a subtraction image of the body organ can be obtained and displayed. Using different image acquisition rates during mask image acquisition and contrast image acquisition high quality subtraction images can be achieved while at the same time reducing the overall X-ray exposure dose.
    • 描述了一种用于获取定期移动的身体器官的融合图像的方法和适于实现这种方法的装置。 在该方法的优选实施例中,将X射线照射到身体器官,并且通过以至少60帧/秒的高图像采集率的X射线检测获取多个掩模图像。 然后,将造影剂注射到身体器官的血管中,随后通过X射线检测获得体内器官与包含在血管中的造影剂的至少一个对比图像。 确定来自多个掩模图像的匹配图像,其在与对比图像的身体器官的移动的基本相同的阶段已被获取。 通过计算匹配掩模图像和至少一个对比图像之间的差异,可以获得并显示身体器官的减影图像。 在掩模图像采集和对比度图像采集期间使用不同的图像采集率可以实现高质量的减影图像,同时减少整个X射线曝光剂量。