Characteristics of patients with internal carotid artery (ICA) and middle cerebral artery (MCA) disease
| ICA | MCA | |||
| Abnormal | Normal | Abnormal | Normal | |
| No of patients (n) | 28 | 15 | 11 | 6 |
| Benzodiazepine receptor index (%) | ||||
| MCA territory (affected) | 24.4±24.6 | 19.7±18.4 | 44.9±43.9 | 38.1±45.5 |
| ACA territory | 20.2±18.3 | 12.9±16.4 | 16.1±13.0* | 4.2±6.2 |
| Cerebral blood flow (ml/100 g/min) | ||||
| MCA territory | 42.8±6.7 | 44.9±7.3 | 42.0±10.4 | 45.3±12.6 |
| ACA territory | 44.4±6.7 | 45.8±7.3 | 47.2±12.2 | 50.3±15.9 |
| Cerebral metabolic rate of oxygen (ml/100 g/min) | ||||
| MCA territory | 3.53±0.32 | 3.81±0.48 | 3.72±0.51 | 3.73±0.35 |
| ACA territory | 3.60±0.31 | 3.82±0.61 | 3.95±0.51 | 3.94±0.66 |
| Age (years) | 68±7 | 63±11 | 58±6 | 58±6 |
| Sex, male/female (n) | 22/6 | 12/3 | 6/5 | 5/1 |
| Side of disease, left/right (n) | 14/14 | 7/8 | 5/6 | 2/4 |
| Symptomatic (n) | 15/13 | 8/7 | 8/3 | 5/1 |
| Subcortical infarction (n) | 21 | 10 | 10 | 4 |
| Size (mm2) | 101±140 | 155±238 | 231±278 | 110±115 |
| Frontal infarction (n) | 13 | 6 | 8 | 4 |
| Wisconsin Card Sorting Test parameters (n) | ||||
| Categories achieved | 1.2±1.0* | 4.2±1.1 | 1.7±1.1* | 5.0±0.6 |
| Total errors | 30.6±6.8* | 16.8±4.0 | 23.6±6.3* | 13.8±4.3 |
| Perseverative errors (Nelson) | 12.7±8.5* | 4.2±3.1 | 7.0±5.7* | 1.8±1.9 |
Values are mean±SD.
↵* p<0.05, Mann–Whitney U test.
Abnormal, low categories achieved on the Wisconsin Card Sorting Test; ACA, anterior cerebral artery; MCA, middle cerebral artery.