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FIG 1. Patient 4: 50-year-old woman undergoing left internal carotid balloon test occlusion in whom neurologic symptoms developed 27 minutes into the procedure.
A, Perfusion map shows delayed perfusion in the left hemisphere and no response in the right frontal borderzone.
B, Axial turboFLAIR image (9000/110, TI = 2500) is normal.
C, Contrast-enhanced axial turboFLAIR image shows curvilinear regions of hyperintensity in the subarachnoid spaces or pial surface on the left frontal region.
D, Contrast-enhanced T1-weighted fat-saturation image (710/17) shows areas of short T1 relaxation in the corresponding regions, but more subtle than on the turboFLAIR image.
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