Table 3.
Yield of Multimodal MRI for the Detection of Ischemic Lesions in the Subgroup of Patients With a Discharge Diagnosis of Definite or Possible TIA
| Definite and Possible TIA | All Patients (n=69) |
DWI+MTT (n=51) |
DWI+TMax (n=51) |
DWI+ASL (n=57) |
DWI+TMax+MTT+ASL (n=40) |
|---|---|---|---|---|---|
| DWI+, no. (%) | 25 (36%) | 18 (35%) | 18 (35%) | 23 (40%) | 16 (40%) |
| Perfusion+, no. (%) | 29 (42%) | 7 (14%) | 20 (39%) | 20 (35%) | 21 (53%) |
| DWI+ and perfusion+, no. (%) | 15 (22%) | 5 (10%) | 11 (22%) | 13 (23%) | 12 (30%) |
| DWI− and perfusion+, no. (%) | 14 (20%) | 2 (4%) | 9 (18%) | 7 (12%) | 9 (23%) |
| DWI+ and perfusion−, no. (%) | 10 (14%) | 13 (25%) | 7 (14%) | 10 (18%) | 4 (10%) |
| DWI+ and/or perfusion+ | 39 (57%) | 20 (39%) | 27 (53%) | 30 (53%) | 25 (63%) |
TIA indicates transient ischemic attack; DWI, diffusion-weighted imaging; MTT, mean transit time; TMax, time of maximum drug concentration; ASL, arterial spin labeling.