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Motion correction in 3D PET/CT using optical flow methods

Motion correction in 3D PET/CT using optical flow methods. M Dawood, F Büther, N Lang, X Jiang, M Schäfers, O Schober, KP Schäfers Nuclear Medicine, University Hospital Münster, Germany. Problem Spatial non-correspondance between PET and CT due to motion. Optical Flow

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Motion correction in 3D PET/CT using optical flow methods

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  1. Motion correction in 3D PET/CT using optical flow methods M Dawood, F Büther, N Lang, X Jiang, M Schäfers, O Schober, KP Schäfers Nuclear Medicine, University Hospital Münster, Germany

  2. Problem Spatial non-correspondance between PET and CT due to motion

  3. Optical Flow A method to estimate deformation between image frames Independent of the form and type of movement between the frames Non-rigid and pixel-based

  4. Combined Local/Global Minimize fLG

  5. Discontinuity Preserving Non-Quadratic Non-Quadratic approach allows better approximation than least squares Discontinuity preservation allows better estimation across organ boundaries Minimize fD

  6. Demonstration Lukas/Kanade Horn/Schunck Bruhn Non-Linear Discontinuity Preserving Result

  7. Results 1 (Phantom)

  8. Results 2 (13N-NH3)

  9. Results 2 (13N-NH3)

  10. Results 3 (18F-FDG)

  11. Results 3 (18F-FDG)

  12. Thank you!

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