Indications for MR scan and prevalence of cICA occlusion or stenosis
| Primary indication for MR scan . | No. scanned . | No. (%) with cICA lesions . |
|---|---|---|
| Abnormal TCD | 18 | 1 (6) |
| Conditional TCD | 13 | 1 (8) |
| Inadequate TCD | 11 | 0 (0) |
| Low-velocity/asymmetric TCD | 2 | 0 (0) |
| Acute stroke | 7 | 4 (57) |
| Previous stroke | 10 | 4 (40) |
| Other neurological symptoms* | 4 | 0 (0) |
| Pre-BM transplantation | 2 | 0 (0) |
| Total | 67 | 10 (15) |
| Primary indication for MR scan . | No. scanned . | No. (%) with cICA lesions . |
|---|---|---|
| Abnormal TCD | 18 | 1 (6) |
| Conditional TCD | 13 | 1 (8) |
| Inadequate TCD | 11 | 0 (0) |
| Low-velocity/asymmetric TCD | 2 | 0 (0) |
| Acute stroke | 7 | 4 (57) |
| Previous stroke | 10 | 4 (40) |
| Other neurological symptoms* | 4 | 0 (0) |
| Pre-BM transplantation | 2 | 0 (0) |
| Total | 67 | 10 (15) |
Patients with stroke also had TCD abnormalities, but the primary indication for MR scan in these cases was for investigation of acute neurological event or monitoring progression of cerebral ischemia and cerebrovascular disease after a previous stroke.
Other neurological symptoms included severe headache (n = 2) and possible transient ischemic attack (n = 2).