Number of coils of different lengths required to fill a 4 mm aneurysm according to their length
| Coil length (cm) | No of coils needed to finish | Normalized cost |
|---|---|---|
| 1 | 10 | 5 |
| 2 | 5 | 2.5 |
| 3 | 4 | 2 |
| 4 | 3 | 1.5 |
| 6 | 2 | 1 |
| 8 | 2 | 1 |
Number of coils and their normalized cost of various lengths of the 2 mm Axium PGLA Helical coils required to achieve 30% packing density in a 4 mm spherical aneurysm after prior framing with a 4 mm×7.5 cm Micrusphere Spherical 10.