title: Determination of blood longitudinal relaxation time (T1) at high magnetic field strengths.
abstract: In this study, a circulation system was used to measure T(1) values of bovine blood under physiological conditions at field strengths of 4.7, 7 and 9.4 T. Results show that T(1) increases linearly with magnetic field B(0) and can be described with the equation T(1)=129 ms/T B(0)+1167 ms for magnetic field strengths between 1.5 and 9.4 T.
authors.affiliation: Center for Magnetic Resonance Research and Department of Radiology, University of Minnesota, Minneapolis, MN 55455, USA.
authors.forename: Mircea C
authors.initials: MC
authors.lastname: Dobre
authors.forename: Kâmil
authors.initials: K
authors.lastname: Uğurbil
authors.forename: Malgorzata
authors.initials: M
authors.lastname: Marjanska
mesh_terms: D000818:Animals; D001783:Blood Flow Velocity; D001790:Blood Physiological Phenomena; D002417:Cattle; D006400:Hematocrit; D008279:Magnetic Resonance Imaging / Q000379:methods*; D010100:Oxygen / Q000097:blood; D012815:Signal Processing, Computer-Assisted; D013696:Temperature
chemical_list: D010100:Oxygen