Thrombus imaging characteristics for ER-LVO and NER-LVO patients at baseline CT imaging.
| Thrombus imaging characteristics | ER-LVO, n=48 | NER-LVO, n=101 | P-value |
| Occlusion location – no./total (%) | |||
| ICA | 0/48 (0%) | 27/101 (27%) | <0.01 |
| M1 | 31/48 (65%) | 57/101 (56%) | 0.35 |
| M2 | 17/48 (35%) | 17/101 (17%) | 0.01 |
| DT (mm) – median (IQR) | 27 (14–33) | 12 (0–23) | <0.01 |
| Thrombus length (mm) – median (IQR) | 17 (10–21) | 27 (15–38) | <0.01 |
| Thrombus perviousness (HU) – median (IQR) | 13.6 (7.1–22.6) | 11.0 (1.4–21.1) | 0.29 |
| Thrombus attenuation (HU) – median (IQR) | 42.7 (36.8–47.4) | 46.0 (36.5–55.0) | 0.16 |
| CBS – median (IQR) | 8 (7–9) | 6 (5–8) | <0.01 |
Occlusion location was assessed in all 149 patients. DT was measured in 131/149 patients, thrombus length in 117/149, thrombus density and perviousness in 73/149, and CBS in 124/149.
CBS, clot burden score; DT, distance from terminus of intracranial carotid artery to the thrombus; ER-LVO, early-recanalized large vessel occlusion; ICA, internal carotid artery; M1, middle cerebral artery M1 segment; M2, middle cerebral artery M2 segment; NER-LVO, non-early-recanalized large vessel occlusion.