Quantitative diffusion-weighted MR imaging (DWI)–derived variables of the 59 transient ischemic attack (TIA) lesions according to imaging outcome
| Reversible (n = 14) | Infarction (n = 45) | P Value | |
|---|---|---|---|
| DWI volume, cm3 (mean ± SD) | 0.21 ± 0.21 | 0.91 ± 1.7 | .003 |
| Absolute ADC, 10−6 mm2/s (mean ± SD) | 722 ± 118 | 631 ± 135 | .022 |
| rADC (mean ± SD) | 91 ± 9% | 79 ± 15% | .001 |
Note:— rADC corresponds to apparent diffusion coefficient (ADC) within the TIA lesion divided by the mirror ADC value.