• Key Magazine of China Technology（CSTPCD）
ISSN 1004-4140
CN 11-3017/P
Volume 18 Issue 1
Mar.  2009
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ZHOU Fu-gen, DUAN Zhuo-lei. Implementation of Demons Algorithm in 4D CT Image Registration[J]. CT Theory and Applications, 2009, 18(1): 69-75.
Citation: ZHOU Fu-gen, DUAN Zhuo-lei. Implementation of Demons Algorithm in 4D CT Image Registration[J]. CT Theory and Applications, 2009, 18(1): 69-75.
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Implementation of Demons Algorithm in 4D CT Image Registration

  • Image Processing Center, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

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  • Received Date: August 31, 2008
  • Available Online: December 14, 2022
    Abstract
  • Respiratory motion is the primary source of error in the 4D precise radiation therapy.It’s a hot topic to analyze the organ deformation between different respiratory phases by registration of 4D images.Currently,3D deformable registration algorithm is commonly used in the research.The algorithm based on optical flow has high speed and high accuracy.Demons algorithm and symmetric gradients are applied to the calculation of original deformable force of 4D CT registration.It is demonstrated that Demons algorithm using symmetric gradients converges faster to results with less error.
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    DUAN Zhuo-lei

    • Image Processing Center, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

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