Studies on microembolus detection in carotid artery stenosis
| Authors | Year | Degree of stenosis (%) | Asymptomatic | MES (%) | Symptomatic | MES (%) |
|---|---|---|---|---|---|---|
| Siebleret al 28 | 1994 | ⩾70 | 56 | 17 | 33 | 82 |
| Georgiadis et al 29 | 1994 | >70 | Not specified | Not specified | 13 | 92 |
| Ries et al 30 | 1995 | ⩾60 | 18 | 0 | 36 | 19 |
| van Zuilen et al 19 | 1995 | ⩾70 | 36 | 56 | ||
| Valtonet al 14 | 1995 | Not specified | 28 | 14 | 20 | 20 |
| Eicke et al 31 | 1995 | ⩾75 | 9 | 0 | 13 | 38 |
| Markus et al 17 | 1995 | ⩾30 | 28 | 4 | 38 | 34 |
| Present study | 1999 | 20–100 | 41 | 10 | 64 | 33 |
| 70–99 | 29 | 14 | 41 | 41 | ||
| 100 | 2 | 0 | 10 | 40 |