232. CHANGE IN VASCULAR 18F-FLUORODEOXYGLUCOSE POSITRON EMISSION TOMOGRAPHY ACTIVITY WITH TREATMENT IN LARGE VESSEL VASCULITIS IN RELATION TO CLINICAL AND SEROLOGIC ASSESSMENT. (29th March 2019) - Banerjee, Shubhasree; Quinn, Kaitlin; Gribbons, Katherine; Rosenblum, Joel; Civelek, Ali; Novakovich, Elaine; Merkel, Peter; Ahlman, Mark; Grayson, Peter