Article Figures & Data
Figures
- FIG 1.
A, Acutely ruptured aneurysm of the MCA M1 segment in a 40-year-old female patient, right anterior oblique view, cranial angulation. B, Stasis of contrast media within the aneurysm after placement of a 3.5 × 2 mm WEB SL device, right anterior oblique view, cranial angulation. C, Prompt occlusion of the aneurysm after detachment of the WEB device, right anterior oblique view, cranial angulation. D, Twelve-month follow-up angiography reveals a stable and complete occlusion of the MCA M1 aneurysm.
- FIG 2.
A, Incidental finding of a “bean-shaped” ICA PcomA aneurysm in a 44-year-old male patient, right anterior oblique view, caudal angulation. B, Placement of an Excelsior SL 10 microcatheter (Stryker) inside the upper lobe of the aneurysm followed by a WEB SL 7 × 3 placed within the aneurysm fundus, fluoroscopy, right anterior oblique view, caudal angulation. C, Coil occlusion of the upper lobe of the aneurysm not completely covered by the WEB device, right anterior oblique view, caudal angulation. D, Three-month follow-up angiography demonstrates a crushing of the WEB device, fluoroscopy, right anterior oblique view, caudal angulation. E, Evidence of a neck remnant due to the crushing of the WEB device on the 3-month follow-up angiography, right anterior oblique view, caudal angulation.
Tables
No. Neck (Median) (mm) Dome (Median) (mm) DN-Ratio Total 47 100% 2.0 3.0 1.5 Anterior circulation 38 80.9% 2.0 3.0 1.5 ICA PcomA 19 40.3% 2.0 4.0 1.5 ACA A2 13 27.7% 2.0 3.0 1.0 MCA M1 2 4.3% 2.5 2.0 0.8 ICA o 2 4.3% 2.5 3.5 1.3 ICA choroid 2 4.3% 2.5 4.5 1.8 Posterior circulation 9 19.1% 3.0 3.0 1.0 PCA P2 2 4.3% 2.0 4.0 1.3 PICA 3 6.4% 2.0 3.0 1.0 SUCA 4 8.4% 2.5 3.5 1.2 Note:—PCA indicates posterior cerebral artery; ICA o, paraophthalmic segment of the ICA; SUCA, superior cerebellar artery; DN-Ratio, dome-to-neck ratio.
- Table 2:
Immediate and follow-up results of the treated aneurysms according to the BOSS classification12
BOSS Classification RROC Grades Immediate (n) Ratio BOSS (%) Ratio RROC (%) FU1 (n) Ratio BOSS (%) Ratio RROC (%) FU2 (n) Ratio BOSS (%) Ratio RROC (%) 47 36 18 0 I 14 29.8 31.9 20 55.6 63.9 13 72.2 77.8 0′ 1 2.1 3 8.3 1 5.6 1 II 28 59.6 59.6 4 11.1 36.1 1 5.6 22.2 2 0 0.0 9 25.0 3 16.6 3 III 1 2.1 8.5 0 0.0 0.0 0 0.0 0.0 1 + 3 3 6.4 0 0 0 0.0 Note:—FU1 indicates first follow-up angiography; FU2, second follow-up angiography.
BOSS classification12: 0, No residual flow inside the aneurysm or the WEB; 0′, opacification of the proximal recess of the WEB; 1, residual flow inside the WEB; 2, neck remnant; 3, aneurysm remnant; 1 + 3, contrast media depicted inside and around the device. BOSS results were transferred into the RROC.13 RROC classification: RROC I, complete occlusion (BOSS 0 and 0′); RROC II, neck remnant (BOSS 1 and 2); RROC III, aneurysm remnant (BOSS 3 and 1 + 3).
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