Table 2.
Values of the studied parameters in the contrast enhancing and non-contrast enhancing aneurysm groups.
| Parameters | Contrast enhancing | Non-contrast enhancing |
|---|---|---|
| Age (years) | Minimum 18.1 | Minimum 18.4 |
| 1st quarter 42 | 1st quarter 50.3 | |
| Median 56.4 | Median 58.2 | |
| Mean 54.8 | Mean 57.5 | |
| 3rd quarter 68.6 | 3rd quarter 63.8 | |
| Maximum 77.3 | Maximum 83.2 | |
| Stand. Dev. 16.9 | Stand. Dev. 15.1 | |
| PHASES Score | Minimum 0 | Minimum 0 |
| 1st quarter 3 | 1st quarter 3 | |
| Median 4 | Median 4 | |
| Mean 5.7 | Mean 4.4 | |
| 3rd quarter 7 | 3rd quarter 5 | |
| Maximum 15 | Maximum 16 | |
| Stand. Dev. 3.6 | Stand. Dev. 3.4 | |
| Length (mm) | Minimum 2.1 | Minimum 1.5 |
| 1st quarter 3.3 | 1st quarter 2.8 | |
| Median 4.6 | Median 3.3 | |
| Mean 7.2 | Mean 5.0 | |
| 3rd quarter 6.8 | 3rd quarter 4.9 | |
| Maximum 31.7 | Maximum 28 | |
| Stand. Dev. 6.9 | Stand. Dev. 5.2 | |
| Width (mm) | Minimum 0.9 | Minimum 2 |
| 1st quarter 3.6 | 1st quarter 3.1 | |
| Median 4.9 | Median 3.8 | |
| Mean 6.6 | Mean 5.3 | |
| 3rd quarter 7 | 3rd quarter 5.0 | |
| Maximum 27 | Maximum 25 | |
| Stand. Dev. 5.4 | Stand. Dev. 4.9 | |
| Height (mm) | Minimum 2.9 | Minimum 1.5 |
| 1st quarter 4 | 1st quarter 3.2 | |
| Median 5.4 | Median 4.2 | |
| Mean 8.6 | Mean 5.7 | |
| 3rd quarter 10 | 3rd quarter 6.3 | |
| Maximum 38 | Maximum 25.2 | |
| Stand. Dev. 7.6 | Stand. Dev. 5.3 | |
| Neck/width ratio | Minimum 1.9 | Minimum 1.5 |
| 1st quarter 2.7 | 1st quarter 2.3 | |
| Median 3.3 | Median 2.5 | |
| Mean 3.7 | Mean 2.9 | |
| 3rd quarter 4.7 | 3rd quarter 3.1 | |
| Maximum 7.8 | Maximum 5.9 | |
| Stand. Dev. 1.7 | Stand. Dev. 1.2 | |
| Height/width ratio | Minimum 0.7 | Minimum 0.7 |
| 1st quarter 1.0 | 1st quarter 0.9 | |
| Median 1.1 | Median 1.0 | |
| Mean 1.8 | Mean 1.0 | |
| 3rd quarter 1.4 | 3rd quarter 1.2 | |
| Maximum 16.6 | Maximum 1.5 | |
| Stand. Dev. 3.1 | Stand. Dev. 0.2 | |
| Bottleneck ratio (width/neck ratio) | Minimum 1.0 | Minimum 0.5 |
| 1st quarter 1.1 | 1st quarter 1.2 | |
| Median 1.4 | Median 1.4 | |
| Mean 1.5 | Mean 1.7 | |
| 3rd quarter 1.7 | 3rd quarter 1.8 | |
| Maximum 2.7 | Maximum 8.3 | |
| Stand. Dev. 0.5 | Stand. Dev. 1.4 | |
| Aspect ratio (height/neck) | Minimum 0.7 | Minimum 0.8 |
| 1st quarter 1.4 | 1st quarter 1.1 | |
| Median 1.7 | Median 1.3 | |
| Mean 1.8 | Mean 1.9 | |
| 3rd quarter 2.3 | 3rd quarter 2.1 | |
| Maximum 3 | Maximum 10 | |
| Stand. Dev. 0.7 | Stand. Dev. 1.7 |