Patterns and prevalence of thrombus migration stratified for segment*
| Most proximal target occlusion | Digital subtraction angiography | |||||||||||
| ICA extracranial | ICA-I | ICA-T | Fetal PComA | MCA–M1 proximal | MCA–M1 distal | MCA–M2 proximal | MCA–M2 distal | M3/M4 | Prevalence of thrombus migration (n (%)) | |||
| CT-/MR-Angiography | ICA extracranial | 44 | 4 | 1 | 1 | 6 (13.6) | 35 (11.9) | |||||
| ICA-I | 10 | 3 | 1 | 1 | 5 (66.6) | |||||||
| ICA-T | - | 94 | - | 8 | 2 | – | – | – | 10 (9.6) | |||
| MCA–M1 proximal | – | – | – | 111 | 7 | 4 | 2 | 1 | 14 (11.2) | |||
| MCA–M1 distal | – | – | – | – | 97 | 11 | 5 | 3 | 19 (16.4) | 36 (16.8) | ||
| MCA–M2 proximal | – | – | – | – | – | 66 | 5 | 9 | 14 (20.0) | |||
| MCA–M2 distal | – | – | – | – | – | – | 15 | 3 | 3 (16.6) | |||
*Three patients had an isolated anterior cerebral artery (ACA) occlusion, all without thromus migration.
CT/MRA, computed tomography/magnetic resonance imaging-based angiography; ICA, internal carotid artery; MCA, middle cerebral artery; PComA, posterior communicating artery.