Localization of endovascular tools in X-ray images using a motorized C-arm: Visualization on HoloLens

Yenjung Chen*, Nilay Yatinkumar Shah, Subhra Sundar Goswami, Annkristin Lange, Felix Von Haxthausen, Malte Maria Sieren, Jannis Hagenah, Floris Ernst, Verónica García-Vázquez

*Corresponding author for this work


C-arms are medical devices widely used for image-guided minimally invasive endovascular procedures. This technology requires considerable experience for the physicians to position the C-arm to obtain X-ray images of the endovascular tools. In addition, this image-guided therapy is based on two-dimensional images which lack depth information. The purpose of this study was to develop a system that controls the C-arm movements based on the previous position of the tip of a guide wire and the vessel information, and also displays the estimated tip position (specifically, the virtual line that would join the X-ray source and the projected tip in the flat-panel detector) on an augmented reality device (HoloLens). A phantom study was conducted to evaluate the system using intraoperative cone-beam computed tomography scans to obtain the reference tip position. The mean distance between the tip position (ground truth) and the virtual three-dimensional line was 1.18 mm. The proposed system was able to control the C-arm movements based on the position of the tip of the guide wire. The visualization on HoloLens also allowed a more intuitive understanding of the position of the endovascular tool related to the patient's anatomy during the intervention.

Original languageEnglish
Article number20200029
JournalCurrent Directions in Biomedical Engineering
Issue number1
Publication statusPublished - 01.05.2020


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