Extracting a Purely Non-rigid Deformation Field of a Single Structure

  • Stefanie Demirci
  • Frode Manstad-Hulaas
  • Nassir Navab
Conference paper
Part of the Informatik aktuell book series (INFORMAT)


During endovascular aortic repair (EVAR) treatment, the aortic shape is subject to severe deformation that is imposed by medical instruments such as guide wires, catheters, and the stent graft. The problem definition of deformable registration of images covering the entire abdominal region, however, is highly ill-posed. We present a new method for extracting the deformation of an aneurysmatic aorta. The outline of the procedure includes initial rigid alignment of two abdominal scans, segmentation of abdominal vessel trees, and automatic reduction of their centerline structures to one specified region of interest around the aorta. Our non-rigid registration procedure then only computes local non-rigid deformation and leaves out all remaining global rigid transformations. In order to evaluate our method, experiments for the extraction of aortic deformation fields are conducted on 15 patient datasets from endovascular aortic repair (EVAR) treatment. A visual assessment of the registration results were performed by two vascular surgeons and one interventional radiologist who are all experts in EVAR procedures.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • Stefanie Demirci
    • 1
  • Frode Manstad-Hulaas
    • 2
  • Nassir Navab
    • 1
  1. 1.Computer Aided Medical Procedures (CAMP)TU München
  2. 2.Department of SurgerySt. Olavs HospitalNTNU Trondheim

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