MRI$B$K$h$kCfG>?eF;$K$*$1$kG>@T?q1U$NN.B.B,Dj(J

Measurement of aqueductal CSF flow velocity using MRI

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Summary

 Observation of cerebrospinal fluid (CSF) dynamics is very important for hydrocephalus diagnosis. There have been a few reprots on calculation of the velocity of fluid using MR phase images. In this study, we attempted to measure the velocity of CSF flow in the aqueduct of the sylvius from inflow effects.
 Fundamental experiments to determine signal characteristics of cardiac cine-gated mode has shown that there was little intensity enhancement accompanying inflow effects in each cine phase. In clinical studies, data collected twice using spatial presaturation pulse made it possible for the analysis of the fluid directions.
 We concluded that the method was clinically useful since it allowed determination of the change in the fluid direction per heartbeat in the aqueductal CSF flow.

Key words:in-flow effect, cerebrospinal fluid, aqueduct of sylvius, gradient echo method
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