A novel technique that can visualize relatively slow flow continously. It is based on SSFP sequence, and gradient pulses are added to introduce spatially linear field gradient. When the steady state is reached, dark bands appear due to the large linear field gradient. When the spins move, these dark band moves following the spin motion, and the flow can be visualized as the motion of the dark bands. Numerical simulation was performed to verify the response to flow, and volunteer images were also taken. It can be a powerful tool to investigate CSF flow.
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