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Non-Newtonian Fluid Velocity Profiles Determined with Simple Magnetic Resonance Spin Echoes

Traditional MRI flow measurements are complicated and employ sophisticated (and thus expensive) hardware. The authors present a simple, palm-sized magnetic resonance magnet with a permanent field gradient, for measuring velocity profiles of Newtonian or non-Newtonian fluids, which is important for rheological studies. A flow yields characteristic phase shifts and signal-magnitude changes that may be analyzed to quantitatively reconstruct velocity profiles. This method removes complexity and expense with a simple, elegant measurement.