Ex Vivo Measurement of Human Blood T1 at 5 T: Dependence on Hematocrit and Oxygenation.
PURPOSE To determine human blood longitudinal relaxation time (T1) ex vivo at 5 T using modified Look-Locker inversion recovery (MOLLI), and to evaluate its dependence on hematocrit (Hct) and oxygenation (Y). METHODS A MOLLI 5(3)3 protocol was simulated across T1 values of 1000-3000 ms to optimize the sampling interv...