Fluoroscopic Roentgen stereophotogrammetric analysis (FRSA) to study three-dimensional stent graft dynamics.
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.
Koning
Olivier H J
OH
Department of Surgery, Division of Vascular Surgery, Leiden University Medical Center, Leiden, The Netherlands. o.koning@jbz.nl
Kaptein
Bart L
BL
van der Vijver
Rozemarijn
R
Dias
Nuno V
NV
Malina
Martin
M
Schalij
Martin J
MJ
Valstar
Edward R
ER
van Bockel
J Hajo
JH
D000368:Aged; D017544:Aortic Aneurysm, Abdominal / Q000000981:diagnostic imaging* / Q000601:surgery*; D005471:Fluoroscopy; D006801:Humans; D021621:Imaging, Three-Dimensional; D008297:Male; D008875:Middle Aged; D009068:Movement; D010780:Photogrammetry / Q000379:methods*; D011857:Radiographic Image Interpretation, Computer-Assisted; D012119:Respiration; D015607:Stents