Anatomic study of the filter content (201 cases) after CAS
| Content | No. (%) |
|---|---|
| Particulate material recovered in the filter | |
| No | 84 (41.8) |
| Yes | 117 (58.2) |
| Volume of the particulate material (117 positive cases) | |
| ≤1 λ (0.001 mL = 1μl = 1 mm3) | 83 (71) |
| >1 λ | 27 (23) |
| >10 λ | 7 (6) |
Note:—CAS indicates carotid angioplasty and stent placement.