首页> 外国专利> METHOD AND APPARATUS FOR CORRECTING CONE-BEAM ARTIFACT IN CONE-BEAM COMPUTED TOMOGRAPHY IMAGE, AND CONE-BEAM COMPUTED TOMOGRAPHY APPARATUS INCLUDING THE SAME

METHOD AND APPARATUS FOR CORRECTING CONE-BEAM ARTIFACT IN CONE-BEAM COMPUTED TOMOGRAPHY IMAGE, AND CONE-BEAM COMPUTED TOMOGRAPHY APPARATUS INCLUDING THE SAME

机译:校正锥束计算机断层摄影图像中的锥束伪像的方法和装置,以及包括该锥束计算机断层摄影术的锥束计算机断层摄影装置

摘要

Disclosed is a technique for quickly removing and correcting a cone-beam artifact generated in a computed tomography (CT) image in consideration of bone and soft tissue regions when using a large-area X-ray detector in order to reduce a CT imaging time for large volumes in a cone-beam CT system. An apparatus includes an input unit configured to receive a start image including a cone-beam artifact, a computation unit configured to separate a high-density material image and a low-density material image from the start image received by the input unit, generate a reproduced image in which the cone-beam artifact is reproduced using the low-density material image, execute a correction process for subtracting the reproduced image from the start image to generate a corrected image, and iterate the correction process using the corrected image as a start image; and an output unit configured to output a final corrected image generated.
机译:公开了一种技术,该技术在使用大面积X射线检测器时考虑到骨骼和软组织区域而快速去除和校正在计算机断层摄影(CT)图像中生成的锥束伪像,以减少用于CT扫描的时间。在锥形束CT系统中体积很大。一种设备,包括:输入单元,其被配置为接收包括锥束伪影的起始图像;计算单元,其被配置为从由输入单元接收的起始图像中分离出高密度材料图像和低密度材料图像,并生成图像。使用低密度材料图像复制锥形光束伪影的复制图像,执行从起始图像中减去复制图像的校正过程以生成校正图像,并以校正后的图像为起点迭代校正过程图片;输出单元,被配置为输出所生成的最终校正图像。

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