A Continuity Equation Based Optical Flow Method for Cardiac Motion Correction in 3D PET Data

European Instituteof Molecular Imaging

A Continuity Equation Based Optical Flow Method for Cardiac Motion Correction in 3D PET Data

M Dawood, C Brune, X Jiang, F Büther, M Burger, O Schober, M Schäfers, KP Schäfers

Department of Computer Science,European Institute for Molecular Imaging

University of Münster, Germany

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European Instituteof Molecular Imaging Motion Correction on 3D PET/CT Data with Optical Flow Algorithms

PET, Minutes

CT, Seconds

Acquisition Times

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European Instituteof Molecular Imaging Motion Correction on 3D PET/CT Data with Optical Flow Algorithms

…

Gating

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European Instituteof Molecular Imaging Motion Correction on 3D PET/CT Data with Optical Flow Algorithms

Mass conserved in cardiac data

Systole FDG-PET 1 h.p.i. non-AC Diastole

Continuity Equation:

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European Instituteof Molecular Imaging Motion Correction on 3D PET/CT Data with Optical Flow Algorithms

Motion vectors

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European Instituteof Molecular Imaging Motion Correction on 3D PET/CT Data with Optical Flow Algorithms

All gates deformed to Diastole

Visual result

Cardiac phases

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European Instituteof Molecular Imaging Motion Correction on 3D PET/CT Data with Optical Flow Algorithms

Quantitative results 1: Correlation with target phase

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European Instituteof Molecular Imaging Motion Correction on 3D PET/CT Data with Optical Flow Algorithms

Quantitative results 2: Myocardial thickness

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European Instituteof Molecular Imaging Motion Correction on 3D PET/CT Data with Optical Flow Algorithms

Quantitative results 3: Time activity curves in blood pool

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European Instituteof Molecular Imaging Motion Correction on 3D PET/CT Data with Optical Flow Algorithms

Thank you