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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
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机译:校正锥形束计算机断层摄影图像中锥形束伪影的方法和装置,以及包括相同的锥形束计算机断层扫描装置
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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.
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