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We present a technique to measure the longitudinal relaxation time constant of venous blood (T1b) in vivo in a few seconds. The MRI sequence consists of a thick‐slab adiabatic inversion, followed by a series of slice‐selective excitations and single‐shot echo planar imaging readouts. The time intervals between excitations were chosen so that blood in macroscopic vessels is fully refreshed between...
In arterial spin labeling (ASL) MRI to measure cerebral blood flow (CBF), pair‐wise subtraction of temporally adjacent non‐labeled and labeled images often can not completely cancel the background static tissue signal because of temporally fluctuating physiological noise. While background suppression (BS) by inversion nulling improves CBF temporal stability, imperfect pulses compromise CBF contrast...
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