Motion Correction on Dual ECG and Respiratory Gated 3D Cardiac PET/CT Data Mohammad Dawood 1,3,4 , T Kösters 2 , M Fieseler 1,3 , F Büther 1,4 , X Jiang 3 , KP Schäfers 1,4 1 European Institute of Molecular Imaging, University of Münster 2 Institute for Computational and Applied Mathematics, University of Münster 3 Institute of Computer Science, University of Münster 4 University Hospital Münster
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Motion Correction on Dual ECG and Respiratory Gated 3D Cardiac PET/CT Data
Motion Correction on Dual ECG and Respiratory Gated 3D Cardiac PET/CT Data. Mohammad Dawood 1,3,4 , T Kösters 2 , M Fieseler 1,3 , F Büther 1,4 , X Jiang 3 , KP Schäfers 1,4 1 European Institute of Molecular Imaging, University of Münster - PowerPoint PPT Presentation
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Motion Correction on Dual ECG and Respiratory Gated 3D Cardiac PET/CT Data
Mohammad Dawood1,3,4, T Kösters2, M Fieseler1,3, F Büther1,4, X Jiang3, KP Schäfers1,4
1European Institute of Molecular Imaging, University of Münster2Institute for Computational and Applied Mathematics, University of Münster
3Institute of Computer Science, University of Münster4University Hospital Münster
M. Dawood EIMI, Münster
Problem: Motion during data acquisition
PET, Minutes
CT, Seconds
M. Dawood EIMI, Münster
Problem: 1. Attenuation correction
Inspiration Expiration
PET: Respiratory phases
CT: Static
M. Dawood EIMI, Münster
Problem: 2. Image blur
Extent of motion
Superimposed image
M. Dawood EIMI, Münster
Motion artifacts lead to errors:
• wrong „staging“ of the tumors (Osman et al 2003, Erdi et al 2004)
• „Uptake Values“ are incorrect (Nakamoto et al 2004)
• small tumors may remain undetected (Papathanassiou et al 2005)