AUTHOR=Stumpo Vittorio , Sayin Ece Su , Bellomo Jacopo , Sobczyk Olivia , van Niftrik Christiaan Hendrik Bas , Sebök Martina , Weller Michael , Regli Luca , Kulcsár Zsolt , Pangalu Athina , Bink Andrea , Duffin James , Mikulis David D. , Fisher Joseph A. , Fierstra Jorn TITLE=Transient deoxyhemoglobin formation as a contrast for perfusion MRI studies in patients with brain tumors: a feasibility study JOURNAL=Frontiers in Physiology VOLUME=Volume 15 - 2024 YEAR=2024 URL=https://www.frontiersin.org/journals/physiology/articles/10.3389/fphys.2024.1238533 DOI=10.3389/fphys.2024.1238533 ISSN=1664-042X ABSTRACT=Interest: JF and DM contributed to the development of the automated end-tidal targeting device, RespirAct™ (Thornhill Research Inc., TRI) used in this study and have equity in the company. ESS, OS and JD are part time employees of TRI. TRI did not commission, provide support for the study, or review the manuscript. MW has received research grants from Quercis and Versameb, and honoraria for lectures or advisory board participation or consulting from Bayer, Curevac, Medac, Novartis, Novocure, Orbus, Philogen, Roche and Sandoz. All other authors have no disclosures to report.