The application of steady-state free precession to the study of very slow fluid flow.
An NMR imaging technique sensitive to slow flow (approximately 1 mm/s) using a conventional imaging gradient strength (0.025 mT/cm) is described. Two projections with different spatial magnetic periodicity (determined by the SSFP pulse interval), and thus with different flow sensitivities, are subtracted to give signal from flows in a velocity window.
D000818:Animals; D001783:Blood Flow Velocity; D006801:Humans; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D008961:Models, Structural; D012212:Rheology