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- Title
Intermediate analysis of magnesium alloy covered stent for a lateral aneurysm model in the rabbit common carotid artery.
- Authors
Cui, Hong-kai; Li, Fen-Bao; Guo, Ying-Chang; Zhao, Yong-Li; Yan, Rui-Fang; Wang, Wu; Li, Yong-Dong; Wang, Yong-Li; Yuan, Guang-Yin
- Abstract
<bold>Objective: </bold>To analyze the outcomes of a magnesium alloy covered stent (MACS) for a lateral aneurysm model in common carotid artery (CCA).<bold>Methods: </bold>In 32 rabbits, a MACS (group A, n = 17) or a Willis covered stent (WCS; group B, n = 15) was inserted and the rabbits were sacrificed 1, 3, 6, or 12 months after stenting. Angiography and intravascular ultrasound (IVUS) were performed at 3, 6, and 12 months. Scanning electron microscopy was performed for six stents in each group at 1, 3, and 6 months, and histopathology and histomorphology were conducted at 3 (n = 4), 6 (n = 4), and 12 (n = 12) months.<bold>Results: </bold>Final angiography showed complete occlusion of the aneurysms in 12 cases. IVUS at 6 and 12 months revealed a significant increase in mean lumen area of the stented CCA in group A and also showed greater mean lumen area in group A than in group B. The endothelialization process was quicker in group A than in group B.<bold>Conclusion: </bold>MACS is effective for occlusion of lateral aneurysms and is superior to WCS in growth of the stented CCA and endothelialization. Further work is needed to make this device available for human use.<bold>Key Points: </bold>• The MACS is an effective approach for occlusion of a lateral aneurysm. • IVUS showed that the CCA could grow following degradation of the MACS. • The lumen area of the stented CCA was excellent in MACS. • HE staining displayed the degradation of the magnesium alloy stent. • Combination of IVUS and DSA were applied in this study.
- Subjects
SURGICAL stents; ANEURYSM treatment; CAROTID artery; ANGIOGRAPHY; SCANNING electron microscopy; CAROTID artery surgery; ANEURYSM surgery; CARDIOVASCULAR surgery; ALLOYS; ANIMAL experimentation; BIOLOGICAL models; BIOMEDICAL materials; CAROTID artery diseases; MAGNESIUM; RABBITS; TREATMENT effectiveness; EQUIPMENT &; supplies
- Publication
European Radiology, 2017, Vol 27, Issue 9, p3694
- ISSN
0938-7994
- Publication type
journal article
- DOI
10.1007/s00330-016-4715-6