BACKGROUND: In endovascular aortic repair (EVAR) procedures, medical instruments are currently navigated with a two-dimensional imaging based guidance requiring X-rays and contrast agent. METHODS: Novel approaches for obtaining the three-dimensional instrument positions are introduced. First, a method based on fiber optical shape sensing, one electromagnetic sensor and a preoperative computed tomography (CT) scan is described. Second, an approach based on image processing using one 2D fluoroscopic image and a preoperative CT scan is introduced. RESULTS: For the tracking based method, average errors from 1.81 to 3.13 mm and maximum errors from 3.21 to 5.46 mm were measured. For the image-based approach, average errors from 3.07 to 6.02 mm and maximum errors from 8.05 to 15.75 mm were measured. CONCLUSION: The tracking based method is promising for usage in EVAR procedures. For the image-based approach are applications in smaller vessels more suitable, since its errors increase with the vessel diameter. This article is protected by copyright. All rights reserved.
- Jäckle, S.
- Lange, A.
- García-Vázquez, V.
- Eixmann, T.
- Matysiak, F.
- Sieren, M. M.
- Horn, M.
- Schulz-Hildebrandt, H.
- Hüttmann, G.
- Ernst, F.
- Heldmann, S.
- Pätz, T.
- Preusser, T.
Keywords
- 2D/3D registration
- 3D localization
- computer assisted surgeryS
- electromagnetic tracking system
- endovascular procedures
- fiber optical shape sensing
