2A2-44 頭蓋内血流計測の応用について(講演,生体計測IV)

概要

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By using dye-injection technique and a laser-Doppler-anemometer, flow patterns and velocity profiles were measured in models of the communicating arteries in the brain, which consisted of two inlets, two outlets and a communication tube. The flow was found to be considerably disturbed at the branching site of the communication (inlet of the communication) as well as at the merging site (outlet of the communication), showing complex secondary flows, stagnation zones and heterogeneous velocity distributions. Such flow patterns were very sensitive to the inlet and outlet flow rate ratios as well as the pressure profiles of inlet flows. This indicates that the blood flow in the arterial communication might show more complicated behavior than the prediction by the model experiment under steady flow condition. Velocity profiles in the intracranial arteries were measured with an ultrasound Doppler anemometer and compared with those in the model experiment.
社団法人日本機械学会の論文
2005-12-07