Table 2:

Immediate and follow-up results of the aneurysms treated with WEB 17 according to the 5-point scale of Caroff et al2,a

Grade No.ImmediateRatio (%)3-Month Follow-UpRatio (%)12-Month Follow-UpRatio (%)
124100.0%9274.2%4133.1%
12318.6%20.2%6267.4%76.1%2970.8%78.0%
221.6%88.7%37.3%
321.6%70.9%1112.0%20.7%614.6%17.1%
48669.4%88.7%12.4%
5118.8%8.9%33.2%3.2%24.9%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.