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3T 3D-TOF-MRA images of the LSAs of a patient with hypertension (a 39-year-old woman, BP = 154/100 mm Hg). Coronal MIP with a slab thickness of 20 mm (A) and axial 20-mm MIP (B) clearly show the LSAs branching from the MCA. The total number of the LSA stems counted from both sides is 4.
