Structural analysis for Wingspan stent in a perforator model.
Perforator infarction represents a critical problem after intracranial Wingspan stent. To explore the mechanism of perforator infarction, we simulated the stent-artery interaction at an atheromatous plaque with perforator. Structural deformation and biomechanical stress distribution after stenting were analyzed. High radial stress values were located along the stent struts, which surrounded the area with high circumferential stress. Stretched perforator orifice in a circumferential direction after stenting was simulated. These results show that structural deformation could play a role in the mechanism of perforator occlusion after Wingspan stenting.
Division of Interventional Neuroradiology, Department of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles; Los Angeles, CA, USA - E-mail: mfujimoto@mednet.ucla.edu.
Motoaki
M
Fujimoto
Yasuhiro
Y
Shobayashi
Koichiro
K
Takemoto
Satoshi
S
Tateshima
Fernando
F
Viñuela
D001783:Blood Flow Velocity; D001794:Blood Pressure; D001807:Blood Vessel Prosthesis / Q000009:adverse effects; D002536:Cerebral Arteries / Q000503:physiopathology* / Q000601:surgery; D002544:Cerebral Infarction / Q000209:etiology* / Q000503:physiopathology*; D002560:Cerebrovascular Circulation; D003198:Computer Simulation; D017076:Computer-Aided Design; D055119:Elastic Modulus; D019544:Equipment Failure Analysis; D006801:Humans; D002537:Intracranial Arteriosclerosis / Q000150:complications / Q000503:physiopathology* / Q000601:surgery; D008955:Models, Cardiovascular; D011474:Prosthesis Design; D033081:Shear Strength; D015607:Stents / Q000009:adverse effects*; D013314:Stress, Mechanical