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FIG 1. Primary cerebral vasculitis in a 7-year-old girl. PSV indicates peak systolic velocity; MCA, middle cerebral artery; ICA, internal carotid artery, ACA, anterior cerebral artery. (A) Graph of transcranial Doppler sonography results plotted for 28 months show gradual improvement in all left-sided vessels. Note variation of individual measurements compared with trends over time. (B) Transcranial Doppler sonography spectrum shows elevated peak systolic velocities in the left MCA. (C) MR angiogram reveals decreased caliber of slightly irregular distal left ICA, A1 segment of the ACA, and M1 of the MCA (arrow). (D) Catheter angiogram obtained 2 days after initiation of therapy demonstrates slight narrowing and irregularity of the distal ICA (arrows). (E) Twenty-eight-month follow-up transcranial Doppler sonogram and (F) catheter angiogram show that the PSV and anatomical appearance of the vessels have returned to near normal.
