Clipping
Coil embolization
Total
IC cavernous
0
5
5
IC paraclinoid
4
17
21
ICPC
14
6
20
IC ant. chor.
1
1
2
IC top
2
4
6
MC
35
1
36
AcomA
18
7
25
AC dist.
2
3
5
VA-PICA
0
3
3
BA top
0
5
5
76
52
128
Table 2
Distribution of unruptured aneurysm sizes and treatment
Clipping | Coil embolization | Total | |
---|---|---|---|
Less than 3 mm | 0 | 0 | 0 |
3–3.9 mm | 4 | 4 | 8 |
4–4.9 mm | 10 | 7 | 17 |
5–5.9 mm | 24 | 7 | 31 |
6–6.9 mm | 15 | 16 | 31 |
7–7.9 mm | 6 | 7 | 13 |
8–8.9 mm | 6 | 3 | 9 |
9–9.9 mm | 2 | 1 | 3 |
More than 10 mm | 9 | 7 | 16 |
76 | 52 | 128 |
In 14 clippings, we confirmed the patency of parent arteries or perforators using ICG. In two complicated clippings, endoscope-assisted procedures were performed (Olympus Optical Corp., Tokyo, Japan).

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