Intermediate analysis of magnesium alloy covered stent for a lateral aneurysm model in the rabbit common carotid artery.
Eur Radiol
; 27(9): 3694-3702, 2017 Sep.
Article
en En
| MEDLINE
| ID: mdl-28124747
ABSTRACT
OBJECTIVE:
To analyze the outcomes of a magnesium alloy covered stent (MACS) for a lateral aneurysm model in common carotid artery (CCA).METHODS:
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.RESULTS:
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.CONCLUSION:
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. KEY POINTS ⢠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.Palabras clave
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Bases de datos:
MEDLINE
Asunto principal:
Procedimientos Quirúrgicos Vasculares
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Enfermedades de las Arterias Carótidas
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Stents
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Materiales Biocompatibles Revestidos
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Aleaciones
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Aneurisma
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Magnesio
Límite:
Animals
Idioma:
En
Revista:
Eur Radiol
Asunto de la revista:
RADIOLOGIA
Año:
2017
Tipo del documento:
Article
País de afiliación:
China