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Published in:
2015 | OriginalPaper | Chapter
Respiratory Motion Compensation for C-Arm CT Liver Imaging
Authors : Aline Sindel, Marco Bögel, Andreas Maier, Rebecca Fahrig, Joachim Hornegger, Arnd Dörfler
Published in: Bildverarbeitung für die Medizin 2015
Publisher: Springer Berlin Heidelberg
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In C-arm CT 3D liver imaging, breathing leads to motion artifacts due to the relatively long acquisition time. Often, even with breath-holding residual respiratory motion can be observed. These artifacts manifest in blurring and interfere clinical investigations such as liver tissue imaging. For 3D medical image reconstruction a respiratory motion estimation and compensation is required. In this work, the motion was estimated by tracking the motion of the diaphragm and of a vessel bifurcation. The motion signals were integrated into a Thin-Plate-Spline that was used for intra-scan motion compensated reconstruction. This approach was applied to clinical C-arm CT data of the liver and showed improved image quality. Reduced artifacts allow a more precise visual depiction of the liver tissue for liver imaging.