Contribution of the straightening effect of the parent artery to decreased recanalization in stent-assisted coiling of large aneurysms

• DOI: 10.3171/2016.9.jns16501
• Publication Date: 2016-12-23T15:30:42Z
• Authors: Akira Ishii; Hideo Chihara; Takayuki Kikuchi; Daisuke Arai; Hiroyuki Ikeda; Susumu Miyamoto
• Keywords: Digital subtraction angiography; Neurovascular bundle

OBJECTIVE The durability of embolization large aneurysms is enhanced by use the neck-bridging stent. However, it remains unclear what factors contribute to decreased recanalization. purpose this study was demonstrate contribution straightening effect parent artery stent-assisted coiling for aneurysms. METHODS Of 182 treated since introduction neurovascular stent, 82 consecutive unruptured with a diameter greater than 7 mm were selected. There 52 stent (Group S) and 30 without NS). Occlusion status evaluated 12 months after digital subtraction angiography. vascular angle measured before, immediately after, embolization. rates recanalization compared between Group S NS. In S, further those significant change. RESULTS rate major 9.6% in 26.7% volume ratio 32.6% 31.6% NS, no statistically difference. angulation change before significantly higher (10.6°) NS (0.9°). difference more evident (19.1° 1.5° found 14.3% 35 stented angular when defined as 20°. contrast, all 17 ≥ 20° remained occluded. CONCLUSIONS Significant most likely leads following