Motion correction of cardiac PET using mass-preserving registration
Gigengack F., Ruthotto L., Burger M., Wolters C., Jiang X., Schafers K.
Research article in edited proceedings (conference) | Peer reviewedAbstract
Cardiac motion leads to image quality degradation in positron emission tomography (PET). In the literature gated listmode acquisition along with motion estimation techniques, such as optical flow or image registration, proved successful for respiratory motion correction. Cardiac gated PET images, however, are affected by the partial volume effect (PVE) which is expressed in strongly varying local intensities. This fact complicates the motion estimation process. To overcome this problem, the mass-preserving nature of PET images is identified and included into the image registration problem. We show that our mass-preserving registration approach allows cardiac motion correction with high accuracy due to realistic motion estimates. In addition, neglecting the mass-preserving property of PET is proven to entail unrealistic results. © 2010 IEEE.
Details about the publication
Authors from the University of Münster
| Burger, Martin | Professorship for applied mathematis, especially numerics (Prof. Burger) |
| Gigengack, Fabian | Institute of Computer Science |
| Jiang, Xiaoyi | Professur für Praktische Informatik (Prof. Jiang) |
| Ruthotto, Lars | Institute for Analysis and Numerics |
| Schäfers, Klaus | European Institute of Molecular Imaging (EIMI) |
| Wolters, Carsten | Institute for Biomagnetism and Biosignalanalysis |