Characteristics of 167 intracranial aneurysms treated with endovascular coil embolization with Modified Raymond-Roy Class IIIa or IIIb closures
| N (%) | |||
|---|---|---|---|
| Characteristic | IIIa | IIIb | p Value |
| Patient data | |||
| Total patients | 83 | 82 | >0.99 |
| Total aneurysms | 84 | 83 | >0.99 |
| Age (years) | 56.3* | 57.9* | 0.69 |
| Female | 73 (88.0) | 66 (80.5) | 0.21 |
| History of smoking | 54 (65.1) | 47 (57.3) | 0.34 |
| History of hypertension | 38 (45.8) | 40 (48.8) | 0.76 |
| History of other intracranial aneurysm(s) | 29 (34.9) | 31 (37.8) | 0.75 |
| History of subarachnoid hemorrhage from other intracranial aneurysm(s) | 3 (3.6) | 1 (1.2) | 0.62 |
| Family history of intracranial aneurysm(s) | 18 (21.7) | 15 (18.3) | 0.70 |
| Aneurysm data | |||
| Size | |||
| Small (<10 mm) | 74 (88.1) | 48 (57.8) | <0.01 |
| Large (10–25 mm) | 10 (11.9) | 33 (39.6) | <0.01 |
| Giant (>25 mm) | 0 | 2 (2.4) | 0.25 |
| Location | |||
| Cavernous ICA | 1 (1.2) | 7 (8.4) | 0.03 |
| SHA | 15 (17.9) | 6 (7.2) | 0.06 |
| OphA | 22 (26.2) | 16 (19.3) | 0.36 |
| Dorsal ICA | 4 (4.8) | 1 (1.2) | 0.37 |
| PcoA | 4 (4.8) | 7 (8.4) | 0.35 |
| AchA | 1 (1.2) | 1 (1.2) | >0.99 |
| ICA terminus | 5 (6.0) | 3 (3.6) | 0.72 |
| AcoA | 12 (14.3) | 13 (15.7) | 0.83 |
| Pericallosal | 2 (2.4) | 0 | 0.50 |
| ATA | 0 | 1 (1.2) | 0.50 |
| MCA bifurcation | 2 (2.4) | 2 (2.4) | >0.99 |
| VA | 2 (2.4) | 1 (1.2) | >0.99 |
| PICA | 1 (1.2) | 2 (2.4) | 0.62 |
| AICA | 1 (1.2) | 0 | >0.99 |
| SCA | 2 (2.4) | 4 (4.8) | 0.44 |
| PCA | 0 | 3 (3.6) | 0.12 |
| BA trunk | 1 (1.2) | 1 (1.2) | >0.99 |
| BA apex | 9 (10.7) | 15 (18.1) | 0.19 |
| Shape | |||
| Spherical | 14 (16.7) | 12 (14.5) | 0.83 |
| Ellipsoid | 62 (73.8) | 66 (79.5) | 0.47 |
| Bilobed | 8 (9.5) | 5 (6.0) | 0.57 |
| Volume (mm3) | 58.1* | 183.6* | <0.01 |
| Neck size (mm) | 3* | 3.8* | <0.01 |
| Aspect ratio | 2* | 2.1* | 0.02 |
| Blebs or dome irregularities | 22 (26.2) | 37 (44.6) | 0.02 |
| Intraluminal thrombus | 4 (4.8) | 17 (20.5) | <0.01 |
| Ruptured aneurysm | 13 (15.5) | 28 (33.7) | <0.01 |
| Procedural data | |||
| Coil embolization | |||
| Stand-alone | 60 (71.4) | 59 (71.1) | >0.99 |
| Stent assistance | 13 (15.5) | 12 (14.5) | >0.99 |
| Balloon assistance | 11 (13.1) | 12 (14.5) | 0.83 |
| Packing density (%) | 33.9*† | 24.3*‡ | <0.01 |
| Intraprocedural rupture | 0 | 0 | >0.99 |
| Retreatment | 8 (9.5) | 34 (41.0) | <0.01 |
*Median.
†Information available on only 77 patients.
‡Information available on only 78 patients.
AchA, anterior choroidal artery; AcoA, anterior communicating artery; AICA, anterior inferior cerebellar artery; ATA, anterior temporal artery; BA, basilar artery; ICA, internal carotid artery; MCA, middle cerebral artery; OphA, ophthalmic artery; PCA, posterior cerebral artery; PcoA, posterior communicating artery; PICA, posterior inferior cerebellar artery; SCA, superior cerebellar artery; SHA, superior hypophyseal artery; VA, vertebral artery.