Relationship between the lesion detection rate and the follow-up interval on SWI
| Follow-Up SWI Intervala | |||
|---|---|---|---|
| Group A (0–12 mo) | Group B (12–36 mo) | Group C (36+ mo) | |
| No. of lesions on initial DWI | 70 | 54 | 56 |
| No. of stroke events on initial DWI | 13 | 9 | 13 |
| Lesion-detection rate on SWI (No.) (%) | 44 (63) | 37 (69) | 20 (36) |
↵a The follow-up SWI interval for a lesion was defined as the time between the initial MRI and the follow-up SWI.