Adaption of 3D Models to 2D X-Ray Images during Endovascular Abdominal Aneurysm Repair
Author(s): Toth D, Pfister M, Maier A, Kowarschik M, Hornegger J
Publication year: 2015
Conference Proceedings Title: 18th International Conference, Munich, Germany, October 5-9, 2015, Proceedings, Part I
Pages range: 339-346
Endovascular aneurysm repair (EVAR) has been gaining popularity over open repair of abdominal aortic aneurysms (AAAs) in the recent years. This paper describes a distortion correction approach to be applied during the EVAR cases. In a novel workflow, models (meshes) of the aorta and its branching arteries generated from preoperatively acquired computed tomography (CT) scans are overlayed with interventionally acquired fluoroscopic images. The overlay provides an arterial roadmap for the operator, with landmarks (LMs) marking the ostia, which are critical for stent placement. As several endovascular devices, such as angiographic catheters, are inserted, the anatomy may be distorted. The distortion reduces the accuracy of the overlay. To overcome the mismatch, the aortic and the iliac meshes are adapted to a device seen in uncontrasted intraoperative fluoroscopic images using the skeletonbased as-rigid-as-possible (ARAP) method. The deformation was evaluated by comparing the distance between an ostium and the corresponding LM prior to and after the deformation. The central positions of the ostia were marked in digital subtraction angiography (DSA) images as ground truth. The mean Euclidean distance in the image plane was reduced from 19.81+/-17.14mm to 4.56+/-2.81 mm.
FAU Authors / FAU Editors How to cite
APA: Toth, D., Pfister, M., Maier, A., Kowarschik, M., & Hornegger, J. (2015). Adaption of 3D Models to 2D X-Ray Images during Endovascular Abdominal Aneurysm Repair. In 18th International Conference, Munich, Germany, October 5-9, 2015, Proceedings, Part I (pp. 339-346). Springer-verlag.
MLA: Toth, Daniel, et al. "Adaption of 3D Models to 2D X-Ray Images during Endovascular Abdominal Aneurysm Repair." Proceedings of the 18th International Conference, Munich, Germany, October 5-9, 2015, Proceedings, Part I Springer-verlag, 2015. 339-346.