PMC3975720_01
Coronal and axial sections of arterial-spin labelling perfusion imaging overlaid on a co-registered T1-weighted image of the case patient (a, b) compared to a control patient (c, d) also with lacunar stroke within 6 h of symptom onset, but with a normal hematocrit. Perfusion imaging is thresholded at 12.3 ml/100 g/min.
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PMC3975720_01_crn-0006-0034-g01.jpg
F1
Quantitative arterial-spin labelling perfusion MRI demonstrated an abnormal pattern of perfusion signal with reduced cerebral blood flow throughout the cerebral hemispheres bilaterally (fig. 1).