Volume misestimating of ellipsoid calculation regarding volume provided by 3D measurements
| Number | Mean Greater Dimension (mm) | Mean Volume Misestimating (%) | |
|---|---|---|---|
| Locations | |||
| MCA | 125 | 7 ± 3 | + 13 ± 41 |
| AcomA | 116 | 7 ± 3 | + 14 ± 37 |
| PcomA | 55 | 7 ± 4 | + 22 ± 44 |
| ICA oph | 42 | 9 ± 5 | + 16 ± 32 |
| Basilar tip | 35 | 8 ± 4 | + 8 ± 27 |
| ICA supra | 33 | 9 ± 5 | + 17 ± 30 |
| Cavernous sinus | 25 | 8 ± 4 | + 19 ± 46 |
| ICA bifurcation | 23 | 7 ± 4 | + 13 ± 33 |
| Pericallosal | 11 | 5 ± 2 | + 6 ± 22 |
| Laterobasilar | 5 | 7 ± 4 | + 24 ± 52 |
| Superior cerebellar | 5 | 4 ± 2 | − 11 ± 27 |
| Vertebral | 4 | 13 ± 3 | + 23 ± 18 |
| PCA | 3 | 7 ± 3 | + 43 ± 59 |
| PICA | 2 | 5 ± 0 | + 10 ± 13 |
| Kruskal-Wallis test P = .6508 | |||
| Sizes | |||
| <10 mm | 385 | 6 ± 2 | + 10 ± 35 |
| ≥10 mm | 99 | 13 ± 4 | + 32 ± 44 |
| Mann-Whitney test P < .0001 | |||
| All sizes and locations | 484 | 8 ± 4 | + 15 ± 38 |
Note:— MCA indicates cerebral artery; AcomA, anterior communicating artery; PcomA, posterior communicating artery; ICA oph, carotid ophthalmic; ICA supra, supraclinoid internal carotid artery (other than ICA oph and PcomA); PCA, posterior cerebral artery; PICA, posterior-inferior cerebellar artery.