S279: EFFECT OF VOXELOTOR ON CEREBRAL PERFUSION AND CEREBRAL OXYGEN METABOLISM IN ADULT PATIENTS WITH SICKLE CELL DISEASE; THE COVERAGE STUDY - Konté, Kadère; Afzali‐Hashemi, Liza; Baas, Koen; Schrantee, Anouk; Nur, Erfan; Nederveen, Aart; Biemond, Bart (HemaSphere, 2023)