Table 2.
Characteristics of basilar artery in LOPD and controls measured by TOF-MRA
| LOPD (n = 20) | controls (n = 40) | p-value ‡ | |
|---|---|---|---|
| Basilar artery characteristics | |||
| - Diameter (mm) | |||
| • proximal • middle • distal |
3.5 ± 0.8 3.2 ± 1.2 3.2 ± 1.1 |
3.1 ± 1.0 2.4 ± 0.4 2.7 ± 0.6 |
p = 0.130 p = 0.0006 p = 0.013 |
| - Anatomical length (mm) | 34.0 ± 6.6 | 30.7 ± 5.2 | p = 0.039 |
| - Linear length (mm) | 31.3 ± 3.7 | 29.1 ± 4.0 | p = 0.051 |
| - Volume (ml) | 0.209 ± 0.164 | 0.113 ± 0.547 | p = 0.0014 |
| Smoker criteria [8] | |||
| - Abnormal lateral BA displacement (≥ grade 2) | 1/20 (5%) | 1/40 (2.5%) | p = 1.00 |
| - Abnormal height of BA bifurcation (≥ grade 2) | 12/20 (60%) | 12/40 (30%) | p = 0.049 |
| Other parameter | |||
| SUCA outlet angle (°) | 127 ± 33a | 156 ± 32 | p = 0.0024 |
| White matter lesions | 12/19 (63%)b | 27/40 (68%) | p = 0.77 |
‡ application of two sample t-test; a in one LOPD patient the BA bifurcation was such abnormal, that SUCA outlet angle was not measurable; b one LOPD patient had a CT