INTRODUCTION: In this study, we analyzed angiographic and histologic aneurysm occlusion of a newly designed flow diverting device. Visibility and flexibility, as well as occlusions of side branches and neointimal proliferation were also evaluated. METHODS: Aneurysms were induced in 18 New Zealand white rabbits and treated with a braided, “closed-loop-designed” device of nitinol. Additional devices were implanted in the abdominal aorta to cover the origin of branch arteries.Angiographic follow-ups were performed immediately after placement of the device, after 3 months (n=9) and 6 months(n =9). The status of aneurysm occlusion (using a five-point scale) and the patency of branch arteries were assessed. RESULTS: Aneurysm occlusion rates were noted as grade 0 in 2 (11 %), grade I in 1 (6 %), grade II in 1 (6 %), grade III in 9(50 %), and grade IV in 5 (28 %) of 18 aneurysms, respectively, indicating a complete or near-complete occlusion of 78 % under double antiplatelet therapy. Aneurysm occlusion was significantly higher at 6 months follow-up (P =0.025). Radiopaque markers provided excellent visibility. Limited device flexibility led to incomplete aneurysm neck coverage and grade 0 occlusion rates in two cases. Distal device occlusions were found in three cases, most likely due to an extremely undersized vessel diameter in the subclavian artery.No case of branch artery occlusion was seen. Intimal proliferation and diameter stenosis were moderate. CONCLUSION: The tested flow diverter achieved near-complete and complete aneurysm occlusion under double antiplatelet therapy of elastase-induced aneurysms in 78 %, while preserving branch arteries.
INTRODUCTION: In this study, we analyzed angiographic and histologic aneurysm occlusion of a newly designed flow diverting device. Visibility and flexibility, as well as occlusions of side branches and neointimal proliferation were also evaluated. METHODS:Aneurysms were induced in 18 New Zealand white rabbits and treated with a braided, “closed-loop-designed” device of nitinol. Additional devices were implanted in the abdominal aorta to cover the origin of branch arteries.Angiographic follow-ups were performed immediately after placement of the device, after 3 months (n=9) and 6 months(n =9). The status of aneurysm occlusion (using a five-point scale) and the patency of branch arteries were assessed. RESULTS:Aneurysm occlusion rates were noted as grade 0 in 2 (11 %), grade I in 1 (6 %), grade II in 1 (6 %), grade III in 9(50 %), and grade IV in 5 (28 %) of 18 aneurysms, respectively, indicating a complete or near-complete occlusion of 78 % under double antiplatelet therapy. Aneurysm occlusion was significantly higher at 6 months follow-up (P =0.025). Radiopaque markers provided excellent visibility. Limited device flexibility led to incomplete aneurysm neck coverage and grade 0 occlusion rates in two cases. Distal device occlusions were found in three cases, most likely due to an extremely undersized vessel diameter in the subclavian artery.No case of branch artery occlusion was seen. Intimal proliferation and diameter stenosis were moderate. CONCLUSION: The tested flow diverter achieved near-complete and complete aneurysm occlusion under double antiplatelet therapy of elastase-induced aneurysms in 78 %, while preserving branch arteries.
Authors: Z Kulcsár; E Houdart; A Bonafé; G Parker; J Millar; A J P Goddard; S Renowden; G Gál; B Turowski; K Mitchell; F Gray; M Rodriguez; R van den Berg; A Gruber; H Desal; I Wanke; D A Rüfenacht Journal: AJNR Am J Neuroradiol Date: 2010-11-11 Impact factor: 3.825
Authors: H J Cloft; T A Altes; W F Marx; R J Raible; S B Hudson; G A Helm; J W Mandell; M E Jensen; J E Dion; D F Kallmes Journal: Radiology Date: 1999-10 Impact factor: 11.105
Authors: Zsolt Kulcsár; Ulrike Ernemann; Stephan G Wetzel; Alexander Bock; Sophia Goericke; Vasilis Panagiotopoulos; Michael Forsting; Daniel A Ruefenacht; Isabel Wanke Journal: Stroke Date: 2010-07-08 Impact factor: 7.914
Authors: Andrew J Molyneux; Richard S C Kerr; Ly-Mee Yu; Mike Clarke; Mary Sneade; Julia A Yarnold; Peter Sandercock Journal: Lancet Date: 2005 Sep 3-9 Impact factor: 79.321
Authors: D Ley; R Mühl-Benninghaus; U Yilmaz; H Körner; G F M Cattaneo; W Mailänder; Y-J Kim; B Scheller; W Reith; A Simgen Journal: Clin Neuroradiol Date: 2015-12-23 Impact factor: 3.649
Authors: K Gester; I Lüchtefeld; M Büsen; S J Sonntag; T Linde; U Steinseifer; G Cattaneo Journal: AJNR Am J Neuroradiol Date: 2015-10-08 Impact factor: 3.825
Authors: Y Ding; D Dai; D F Kallmes; D Schroeder; C P Kealey; V Gupta; A D Johnson; R Kadirvel Journal: AJNR Am J Neuroradiol Date: 2015-10-22 Impact factor: 3.825
Authors: Yanxia Lyu; Jie Luo; Yonghong Zhang; ChaoJia Wang; AnRong Li; Yi Zhou; EnFu Du; Hui Wang; JunTao Hu Journal: Biomed Res Int Date: 2020-08-26 Impact factor: 3.411