Table 2.
Lesion locus and type
| Lesion type | Number (%) |
|---|---|
| Brainstem infarct or hemorrhage | 59 (14.4) |
| Hemispheric hemorrhage | 66 (16.1) |
| Hemispheric lacunar infarction | 86 (21.1) |
| Hemispheric large vessel distribution infarction | 149 (36.6) |
| Missing (scan unavailable or too early to demonstrate lesion) | 48 (11.7) |
| Lesion locus | |
| Posterior limb of internal capsule/posterior periventricular white matter | NA* |
| Anterior limb of internal capsule/putamen/head of caudate | 123 (30.2) |
| Middle cerebral artery (operculum) | 99 (24.3) |
| Middle cerebral artery (infarct or hemorrhage): frontal lobe | 115 (28.2) |
| Middle cerebral artery (infarct or hemorrhage): parietal lobe | 68 (16.7) |
| Middle cerebral artery (infarct or hemorrhage): temporal lobe | 68 (16.7) |
| Anterior cerebral artery | 12 (2.9) |
| Posterior cerebral artery | 9 (2.2) |
| Brainstem | 59 (14.5) |
| Thalamus | 28 (6.9) |
| Cerebellum | 1 (0.2) |
| Side of lesion | |
| Right | 199 (48.8) |
| Left | 164 (40.2) |
| Missing | 45 (11.4) |
| Prior stroke (laterality not documented) | 70 (17.2) |
| Leukoaraiosis (moderate to severe) | 62 (15.2) |
*
One of the image readers documented the presence or absence of a lesion in this region only in participants who did not have large vessel distribution MCA territory infarcts. Thus, valid aggregate data are not available.