Table 1. Evaluation of 3D-ioUS.
| Patient | Location | Aneurysm volume (cm3) | 3D-ioUS availability | 3D-ioUS sufficiency | Aneurysm | Carrier vessel | Aneurysm neck | Outgoing vessels | Coregistration of ioUS/rDSA | Comments |
|---|---|---|---|---|---|---|---|---|---|---|
| Pre / post Clip | ||||||||||
| 1 | MCA | 0.133 | +/− | +++/− | +++/− | +++/− | +++/− | +++/− | +/− | |
| 2 | MCA | 0.298 | +/+ | +++/+++ | +++/+++ | +++/+++ | +++/++ | +++/++ | +/+ | |
| 3 | MCA | 0.08 | +/− | +++/− | +++/− | +++/− | +++/− | +++/− | +/− | |
| 4 | MCA | 0.044 | +/+ | +++/+++ | +++/++ | +++/++ | +++/+++ | +++/+++ | +/+ | |
| 5 | MCA | 1.44 | +/− | +++/− | +++/− | +++/− | +++/− | ++/− | +/− | |
| 6 | AcommA | 1.4 | +/− | +/− | −/− | −/− | −/− | +/− | −/− | Aneurysm not in FOV |
| 7 | MCA/ +ICA-T | 0.03 | +/+ | +++/+++ | +++/+++ | +++/+++ | ++/++ | +++/+ | +/+ | |
| 8 | AcommA. | 0.22 | +/− | ++/− | −/− | −/− | −/− | −/− | +/− | Aneurysm not in FOV |
| 9 | AcommA. | 0.16 | +/− | +++/− | −/− | −/− | −/− | −/− | +/− | Aneurysm not in FOV |
| 10 | MCA | 0.76 | +/− | +++/− | ++/− | ++/− | ++/− | ++/− | +/− | |
| 11 | AcommA. | 0.98 | +/− | ++/− | −/− | −/− | −/− | −/− | +/− | Aneurysm not in FOV |
| 12 | AcommA. | 1.17 | +/+ | +++/+ | +++/− | +++/− | +++/++ | ++/− | +/+ | |
| 13 | AcommA. | 0.64 | +/+ | +++/+ | −/− | +++/+ | ++/− | +++/− | +/− | Thrombosed aneurysm |
| 14 | MCA | 1.32 | +/+ | +++/+ | +++/− | +++/− | +++/− | ++/− | +/− | |
| 15 | MCA | 0.084 | +/+ | +++/+++ | +++/++ | +++/++ | +++/+++ | +++/++ | +/+ | |
| 16 | MCA | 0.21 | +/− | +++/− | ++/− | +++/− | ++/− | +++/− | +/− | |
| 17 | MCA | 0.81 | +/+ | +++/+ | +++/− | ++/+ | ++/− | +++/+ | +/− | |
| 18 | MCA | 0.13 | +/+ | ++/+ | ++/− | +/− | +/− | ++/++ | +/+ | |
| 19 | MCA/MCA | 0.036 | +/+ | +++/+++ | ++/++ | +++/+++ | +++/+++ | +++/+++ | +/+ | |
| 20 | MCA | 0.36 | +/+ | +++/+++ | +++/++ | +++/++ | +++/++ | ++/++ | +/+ | |
| 21 | MCA/MCA | 0.165 | +/+ | +++/++ | +++/+ | +++/+ | +++/+++ | +++/++ | +/+ | |
| 22 | MCA/MCA/MCA | 0.364 | +/+ | +/+ | +/+ | +++/++ | ++/++ | ++/++ | +/+ | |
| 23 | MCA | 0.01 | +/− | +++/− | ++/− | ++/− | ++/− | ++/− | +/− | |
| 24 | MCA/MCA | 0.7 | +/+ | +++/+ | +++/− | +++/+ | ++/− | ++/− | +/− | |
| 25 | MCA | 0.247 | +/+ | +++/++ | ++/++ | +++/++ | ++/+++ | +++/++ | +/+ | |
| 26 | AcommA./MCA | 0.04 | +/+ | +/+ | −/− | +/− | +/− | +/− | −/− | Aneurysm not in FOV |
| 27 | MCA | 0.56 | +/+ | +++/+++ | +++/+++ | +++/+++ | +++/+++ | +++/+++ | +/+ | |
| 28 | AcommA./MCA | 0.193 | +/+ | +++/++ | ++/++ | +++/+++ | +++/+++ | ++/++ | +/+ | |
| 29 | MCA | 2.02 | +/+ | ++/+ | ++/− | ++/− | ++/− | ++/− | +/− | |
| 30 | MCA/MCA/MCA | 0.59 | +/− | +++/− | +++/− | +++/− | +++/− | +++/− | +/− | |
| 31 | AcommA | 0.77 | +/+ | +++/+ | +++/− | +++/− | +++/− | ++/− | +/− | |
| 32 | ICA-T | 1.1 | +/− | ++/− | ++/− | ++/− | ++/− | ++/− | +/− | Aneurysm partially thrombosed |
| 33 | MCA | 2.5 | +/− | +++/− | +++/− | +++/− | +++/− | ++/− | +/− | |
| 34 | MCA | 0.068 | +/− | +++/− | +++/− | +++/− | +++/+++ | −/− | +/− | |
| 35 | ICA-T | 1.81 | +/− | ++/− | ++/− | ++/− | ++/− | ++/− | +/− | |
| 36 | MCA | 0.81 | +/+ | +++/− | +++/− | +++/− | +++/− | +++/+ | +/− | |
| 37 | AcommA/MCA/MCA | 0.14 | +/− | +++/− | +++/− | +++/− | ++/− | ++/− | +/− | |
| 38 | AcommA | 0.1 | +/+ | +/− | +/− | −/− | −/− | −/− | −/− | |
| 39 | MCA | 0.035 | +/+ | +++/++ | +++/++ | ++/++ | ++/++ | ++/+++ | +/+ | |
Aneurysm volumes were calculated from the maximum intensity projection (MIP) volumes of ioUS. As indicated, ioUS measurements were performed pre- and post-clipping. Two independent investigators evaluated the data which is depicted on a scale from – (not available or insufficient images) to +, ++, or +++. The overlap presents the volumetric ratio of the aneurysms.