Motion correction in 3d pet ct using optical flow methods
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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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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


Motion correction in 3d pet ct using optical flow methods

Problem

Spatial non-correspondance between PET and CT due to motion


Motion correction in 3d pet ct using optical flow methods

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


Motion correction in 3d pet ct using optical flow methods

Combined Local/Global

Minimize fLG


Motion correction in 3d pet ct using optical flow methods

Discontinuity Preserving Non-Quadratic

Non-Quadratic approach allows better approximation than least squares

Discontinuity preservation allows better estimation across organ boundaries

Minimize fD


Motion correction in 3d pet ct using optical flow methods

Demonstration

Lukas/Kanade Horn/Schunck Bruhn

Non-LinearDiscontinuity Preserving Result


Motion correction in 3d pet ct using optical flow methods

Results 1 (Phantom)


Motion correction in 3d pet ct using optical flow methods

Results 2 (13N-NH3)


Motion correction in 3d pet ct using optical flow methods

Results 2 (13N-NH3)


Motion correction in 3d pet ct using optical flow methods

Results 3 (18F-FDG)


Motion correction in 3d pet ct using optical flow methods

Results 3 (18F-FDG)


Motion correction in 3d pet ct using optical flow methods

Thank you!


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