Journal of vascular surgery, Volume 50, Issue 2, 1 1 2009, Pages 407-412 Fluoroscopic Roentgen stereophotogrammetric analysis (FRSA) to study three-dimensional stent graft dynamics. Koning OH, Kaptein BL, van der Vijver R, Dias NV, Malina M, Schalij MJ, Valstar ER, van Bockel JH
We report the clinical feasibility of fluoroscopic Roentgen stereophotogrammetric analysis (FRSA), a validated method to quantify real time three-dimensional (3D) dynamic motion of stent grafts and the first clinical results after abdominal and thoracic endovascular repair (EVAR). Stent graft motion was measured at 30 (stereo) frames per second, during the cardiac cycle and in the patient after abdominal EVAR, due to respiratory action. Translational motions of the center of mass, diameter change, and rotational and axial motion could be measured. Quantification of 3D motion was not available until now. FRSA can provide crucial information on the forces exerted on stent grafts and will, therefore, provide essential information for improvements in stent graft design.
