Table 3.
Radiographic Characteristics of Non-Surgical Strokes*
| (in % unless otherwise specified) | Any ischemic stroke (N=148) |
Any parenchymal hemorrhage (N=20) |
Any subarachnoid hemorrhage (N=19) |
|---|---|---|---|
| Arterial Territory | |||
| MCA | 91.7 | 100 | 84.6 |
| ACA | 34.7 | 0.0 | 0.0 |
| PCA | 38.2 | 0.0 | 23.1 |
| BA | 44.4 | 16.7 | 0.0 |
| VA | 2.8 | 0.0 | 0.0 |
| Anterior and Posterior Circulation | 51.0 | 15.8 | 7.1 |
| Bilateral Anterior | 12.4 | 21.2 | 14.3 |
| Left-sided Anterior Only | 15.9 | 10.5 | 35.7 |
| Right-sided Anterior Only | 13.1 | 47.4 | 14.3 |
| Posterior Only | 6.9 | 0.0 | 21.4 |
| Cortical | 39 | 78.9 | 100.0 |
| Subcortical (medullary artery territory only) | 4.8 | 0.0 | 0.0 |
| Subcortical (penetrating artery territory only) | 1.4 | 10.5 | 0.0 |
| Cortical and Medullary Artery | 27.6 | 0.0 | 0.0 |
| Mixed (penetrating and cortical or medullary) | 26.2 | 5.3 | 0.0 |
| Anatomical Location | |||
| Frontal Lobe | 85.4 | 72.2 | 69.2 |
| Parietal Lobe | 57.6 | 50.0 | 30.8 |
| Temporal Lobe | 29.2 | 22.2 | 25.4 |
| Occipital Lobe | 38.2 | 5.6 | 30.8 |
| Basal Ganglia | 20.1 | 5.6 | 0.0 |
| Brain Stem | 18.8 | 0.0 | 0.0 |
| Cerebellum | 43.1 | 16.7 | 0.0 |
| Infarct Size | |||
| > 1,000 mm3 (1 cm3) | 51.7 | 75.0 | – |
| 1,000-10,000 mm3 (1-10 cm3) | 58.1 | 46.2 | – |
| 10,001-30,000 mm3 (11-30 cm3) | 20.3 | 23.1 | – |
| >30,000 mm3 (>30 cm3) | 21.6 | 30.3 | – |
| Mycotic Aneurysm | 6.9 | 15.0 | – |
| Parenchymal Diagnostic Method Used | |||
| Brain CT only | 23.6 | 57.9 | 64.3 |
| Brain MRI (+/− brain CT) | 77.6 | 36.8 | 28.6 |
| Intracranial Arterial Methods Used | |||
| Brain CTA | 12.2 | 15.8 | 21.4 |
| Brain MRA | 39.2 | 10.5 | 14.3 |
| DSA | 20.9 | 47.4 | 28.6 |
*
Components of mixed presentations were considered separately.
Abbreviations: MCA middle cerebral artery; ACA anterior cerebral artery; PCA posterior cerebral artery; BA basilar artery; VA vertebral artery; DSA digital subtraction angiography.