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- W2019913719 abstract "Abstract An inflow MR signal behavior for high fluid velocity is reported here, for which there is no existing literature. It is obtained thanks to a bare and fast gradient echo sequence. Acquisition parameters were defined to follow the signal of a once excited bolus. We observed a considerable and reproducible drop in the signal intensity, inversely proportional to the flow velocity. This relation is hyperbolic, with reliable R2 > 0.97 for high velocities. Several experiments were performed in order to test the possible reasons for signal reduction. Distance to the reception coil, slice thickness and echo time, fluid viscosity and radiofrequency impact on a moving fluid. The determinist relationship between signal and velocity incited us to check the feasibility of a velocity quantification method based on that process. Its high time resolution is an advantage for hemodynamic vascular properties understanding." @default.
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- W2019913719 date "2009-11-01" @default.
- W2019913719 modified "2023-09-30" @default.
- W2019913719 title "Signal reduction at high velocities during one plug MR inflow" @default.
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- W2019913719 doi "https://doi.org/10.1016/j.irbm.2009.09.002" @default.
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