Patient details and site of lesion (as defined on MRI) are shown in columns 2 and 3. In columns 4-8 examples of subtest scores are shown from each patient’s formal language assessment nearest to their PET.
| Patient | Age/sex | Site of lesion | Comprehensive aphasia test (examples of subtest scores at optimal recovery) | PET Performance | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Ravens, NR 5-9, Max 12 | Auditory comprehension, NR 25-30, Max 30 | Naming, NR 42-48, Max 48 | Repetition, NR 30-32, Max 32 | Verbal fluency (animals), NR 11-24 | Estimated words/min | Estimated error rate | |||||
| 1 | 58/F | L temporal lobe + inferior parietal region | 12 | 28 | 32 | 25 | 19 | 12.3 | <1% | ||
| 2 | 28/F | L temporoparietal | 7 | 28 | 48 | 31 | 19 | 12.8 | <1% | ||
| 3 | 32/F | L temporoparietal (glioma) | 4 | 28 | 44 | 32 | 12 | 19.8 | <1% | ||
| 4 | 54/M | L temporal lobe +inferior parietal region | 2 | 28 | 32 | 28 | 10 | 16.7 | 48.4% | ||
| 5 | 69/M | Subcortical ischaemia | 7 | 29 | 43 | 32 | 7 | 16.0 | 7.2% | ||
| 6 | 64/M | L perisylvian region | 7 | 29 | 38 | 29 | 14 | 17.6 | 5% | ||
The subtests are taken from the comprehensive aphasia test (CAT). The maximum possible scores (Max) are shown and also a normal range (NR), calculated from subtest scores on a cohort of normal subjects matched for age and sex. During PET a retrospective estimate of words generated was made in the wash out period between scans. The estimated rate of word retrieval/minute is shown in column 9 with an estimated error rate (given as a percentage of the total) in column 10. Errors were taken as any words that were not verbs, eg nouns and adjectives but which were still semantically related to the target word.