Table 1.
Baseline, procedural, and follow-up data
| Aneurysm/side | Baseline aneurysm dimensions | Embolization coil volumes and packing densities | Raymond–Roy* | ||||||||||||||
| NW | W | H | V | TX-PE V | TX-E V | TX-PE pack | TX-E pack | Total V | Total pack TX-PE | Total pack TX-E | TX-E % total | Stent assisted coiling | PP | 6 months | 12 months | ||
| mm | mm | mm | mm3 | mm3 | mm3 | % | % | mm3 | % | % | % | ||||||
| C6 seg ICA | R | 8.2 | 14.4 | 14.9 | 1618 | 120 | 460 | 28 | 0 | 460 | 7 | 28 | 100 | Yes | 3 | 3 | 2 |
| C6 seg ICA | L | 2.0 | 6.0 | 8.3 | 156 | 20 | 76 | 49 | 15 | 91 | 22 | 58 | 84 | – | 2 | 1† | 1 |
| C6 seg ICA‡ | L | 5.5 | 7.8 | 4.5 | 143 | 10 | 38 | 26 | 7 | 45 | 12 | 31 | 85 | Yes | 3 | 1 | 1 |
| C6 seg ICA | R | 2.7 | 6.2 | 5.7 | 115 | 12 | 47 | 41 | 13 | 60 | 22 | 53 | 78 | – | 1 | 1† | 1 |
| C6 seg ICA | L | 4.1 | 6.1 | 6.0 | 117 | 10 | 36 | 31 | 12 | 48 | 19 | 41 | 75 | – | 2 | 1 | 2§ |
| C6 seg ICA¶ | R | 3.1 | 6.1 | 4.8 | 94 | 8 | 31 | 34 | 10 | 42 | 20 | 45 | 75 | – | 1 | 1 | 1 |
| C6 seg ICA | L | 3.4 | 4.8 | 5.2 | 63 | 6 | 24 | 38 | 5 | 28 | 18 | 45 | 83 | – | 2 | 2 | 2§ |
| PCom A** | R | 4.7 | 8.7 | 8.1 | 321 | 17 | 65 | 20 | 15 | 80 | 10 | 25 | 82 | Yes | 2 | 2† | 2 |
| ACA A1–A2 | L | 4.0 | 6.8 | 5.0 | 121 | 16 | 62 | 51 | 15 | 77 | 26 | 64 | 80 | Yes | 2 | 1 | 1 |
Aneurysm volumes, coil volumes, and packing densities were determined using the calculator at www.angiocalc.com in March 2022. Online supplemental table 2 contains specifics on all the coils used in each case.
*Determined by fluoroscopy guided catheter angiography at the time points indicated, with some exceptions (see below).
†Determined by MR angiography at 10 months because of COVID-19 pandemic restrictions to clinical operations.
‡Illustrated in figure 3.
§Determined by catheter angiography at 19 months because of COVID-19 pandemic restrictions to clinical operations.
¶Illustrated in figure 2.
**Illustrated in figure 4.
ACA A1-A2, anterior cerebral artery A1–A2 segment; C6 seg ICA, ophthalmic segment of the internal carotid artery; H, height; NW, neck width; PCom A, posterior communicating artery; PP, at case completion angiography; Raymond–Roy, Raymond–Roy occlusion classification; Total pack TX-E, packing density based on the total volume of all coils used in the aneurysm with the TrelliX embolic coil volume with expanded shape memory polymer; Total pack TX-PE, packing density based on the total volume of all coils used in the aneurysm with the TrelliX embolic coil volume prior to expansion of the shape memory polymer; Total V, total coil volume, including coils other than TrelliX embolic coils; TX-E pack, packing density based on the TrelliX embolic coil volume with expanded shape memory polymer; TX-E % total, proportion of the total coil volume that is TrelliX embolic coil volume, based on expanded shape memory polymer; TX-E V, TrelliX embolic coil volume with expanded shape memory polymer; TX-PE pack, packing density based on the TrelliX embolic coil volume prior to the expansion of the shape memory polymer; TX-PE V, TrelliX embolic coil volume prior to the expansion of the shape memory polymer; V, volume; W, width.