Distribution of arterial occlusive disease in numbers and rates, given per patient (N = 2209)a
| Circulation | Ischemic Territory | Subtotal for Ischemic Territory | All Abnormalities (Related to Ischemia or Not) | No Relevant Abnormalities | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Occlusion | Stenosis | Occlusion and/or Stenosis | Occlusion and/or Stenosis | |||||||
| Extracranial abnormalities per segment | ||||||||||
| Extracranial ICA or CCA | 206 | 9.3% | 165 | 7.5% | 369 | 16.7% | 437 | 19.8% | 1772 | 80.2% |
| Extracranial vertebral | 51 | 2.3% | 26 | 1.2% | 75 | 3.4% | 139 | 6.3% | 2070 | 93.7% |
| Subtotal extracranial abnormalities | 257 | 11.6% | 190 | 8.6% | 442 | 20.0% | 543 | 24.6% | 1666 | 75.4% |
| Isolated extracranial abnormalities | 35 | 1.6% | 103 | 4.7% | 136 | 6.2% | 231 | 10.5% | 1978 | 89.5% |
| Intracranial abnormalities per patient | ||||||||||
| Anterior intracranial | 429 | 19.4% | 88 | 4.0% | 508 | 23.0% | 534 | 24.2% | 1675 | 75.8% |
| Posterior intracranial | 96 | 4.4% | 51 | 2.3% | 135 | 6.1% | 174 | 7.9% | 2035 | 92.1% |
| Subtotal intracranial abnormalities | 523 | 23.7% | 135 | 6.1% | 633 | 28.7% | 683 | 30.9% | 1526 | 69.1% |
| Isolated intracranial abnormalities | 519 | 23.5% | 133 | 6.0% | 627 | 28.4% | 669 | 30.3% | 1526 | 69.1% |
| Total extra- and intracranial circulation per patient | 780 | 35.3% | 325 | 14.7% | 1075 | 48.7% | 1226 | 55.5% | 983 | 44.5% |
Note:—CCA indicates common carotid artery.
↵a The totals and subtotals may be smaller than the sum of the columns because patients may have arterial occlusive disease simultaneously in different segments or on different levels.