A novel approach to perfusion MRI studies in brain tumor patients using endogenous deoxyhemoglobin as a contrast agent: a proof-of-concept study - Vittorio Stumpo; Ece Su Sayin; Jacopo Bellomo; Christian Hendriik Bas van Niftrik; Martina Sebök; Olivia Sobczyk; Julien Poublanc; Joseph Fisher; David Mikulis; Athina Pangalu; Zsolt Kulcsar; Michael Weller; et al. (Brain and Spine, 2023)