Two-Center Experience in the Endovascular Treatment of Intracranial Aneurysms Using the Woven EndoBridge 17 Device Including Midterm Follow-Up Results: A Retrospective Analysis

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FIGURE.
The complete occlusion of an unruptured bilobulated aneurysm of the AcomA in a patient with a history of SAH from another aneurysm. Injection of the left ICA with visualization in left-anterior-oblique view (A), deployment of a 6-mm WEB-SLS in the lower lobule of the aneurysm covering the orifice of the upper lobule (B), progressive thrombosis in both the lower and upper lobules of the aneurysm (C), visualization of the WEB 17 in the lower lobule of the aneurysm (fluoroscopy) (D), and 9-month follow-up angiography with stable and complete occlusion of the aneurysm (E).

Table 1:

Location of the 127 intracranial aneurysms treated with WEB 17

Note:—ACA indicates anterior cerebral artery; ACA A2, anterior cerebral artery A2 segment; bif, bifurcation; PcomA, posterior communicating segment; BA tip, basilar artery tip; PCA, posterior cerebral artery.

Table 2:

Immediate and follow-up results of the aneurysms treated with WEB 17 according to the 5-point scale of Caroff et al^{2,^a}

Grade No.	Immediate	Ratio (%)		3-Month Follow-Up	Ratio (%)		12-Month Follow-Up	Ratio (%)
	124	100.0%		92	74.2%		41	33.1%
1	23	18.6%	20.2%	62	67.4%	76.1%	29	70.8%	78.0%
2	2	1.6%	20.2%	8	8.7%	76.1%	3	7.3%	78.0%
3	2	1.6%	70.9%	11	12.0%	20.7%	6	14.6%	17.1%
4	86	69.4%	70.9%	8	8.7%	20.7%	1	2.4%	17.1%
5	11	8.8%	8.9%	3	3.2%	3.2%	2	4.9%	4.9%

↵a Grade 1: no residual flow in aneurysm/WEB 17; grade 2: opacification of the proximal recess of WEB 17; grade 3: neck remnant; grade 4: residual flow inside the WEB 17; grade 5: aneurysm remnant. Grades 1–2 are summarized as complete occlusion, grades 3 and 4 indicate a neck remnant or flow inside the WEB, and grade 5 represents an aneurysm remnant.