Volume flow (ml/min),1H-MRS results, and prevalence of infarcts
| Group number | 1 | 2 | 3 | 4 | 5 | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| ICA occlusion? | Yes | Yes | Yes | No | No | |||||
| Symptoms | Hemispherical | Retinal | None | Hemispherical | None | |||||
| n | 24 | 12 | 7 | 9 | 25 | |||||
| MRA volume flow | Median (%) percentiles | Median (%) percentiles | Median (%) percentiles | Median (%) percentiles | Median percentiles | |||||
| Total cerebropetal flow | 498 (92%) | (396–568) | 438 (81%) | (404–461) | 406 (75%) | (371–492) | 546 (101%) | (483–606) | 543 | (450–609) |
| MCA ipsilateral | 72 (67%) | (56–89) | 93 (77%) | (81–104) | 62 (51%) | (51–85) | 108 (89%) | (71–140) | 121 | (112–147) |
| MCA contralateral | 82 (59%) | (70–107) | 100 (83%) | (82–119) | 98 (81%) | (69–111) | 138 (114%) | (98–154) | 121 | (112–147) |
| NAA/Cho ratio: | ||||||||||
| Ipsilateral side | 1.52 (82%) | (1.42–1.69) | 1.71 (92%) | (1.69–1.84) | 1.71 (92%) | (1.69–1.87) | 1.57 (84%) | (1.45–1.76) | 1.86 | (1.76–2.04) |
| Contralateral side | 1.77 (95%) | (1.56–2.00) | 1.85 (99%) | (1.81–1.94) | 1.83 (98%) | (1.72–1.93) | 1.80 (97%) | (1.70–1.91) | 1.86 | (1.76–2.04) |
| Infarcts ipsilateral side | n | Prevalence | n | Prevalence | n | Prevalence | n | Prevalence | n | Prevalence |
| Territorial | 10 | 42% | 2 | 17% | 0 | 0% | 5 | 50% | 0 | 0% |
| Border zone | 7 | 29% | 2 | 17% | 0 | 0% | 3 | 30% | 0 | 0% |
| Both | 4 | 17% | 0 | 0% | 0 | 0% | 1 | 10% | 0 | 0% |
Patients are grouped by the presence or absence of an ICA occlusion, and by the presence or absence of symptoms. Flow and1HMRS data are expressed as median, as a percentage of the median in group 5, and as the 25th and 75th percentile. Total cerebropetal flow is calculated by summing the flow in both ICAs and the BA. Prevalence of territorial infarcts (including lacunar), border zone infarcts or both type of infarcts in the ipsilateral hemisphere of the patients.