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Fig. 4 | Fluids and Barriers of the CNS

Fig. 4

From: Pulsatile flow drivers in brain parenchyma and perivascular spaces: a resistance network model study

Fig. 4

Effect of one vessel and two vessel model parameter sweeps on parenchyma peak fluid velocity. a One vessel model parenchyma peak fluid velocity (R6) as pulse amplitude varied for different radial distances from the PVS outer radius. See Fig. 1 for resistor labels. b One vessel model parenchyma peak fluid velocity (R6) as PVS inner radius varied for a range of outer radius values. c One vessel model PVS (R2) and parenchyma (R6) peak fluid velocity as PVS hydraulic conductivity varied. Here the porous media formulation for PVS hydraulic resistance was implemented (Eq. 8). d One vessel model PVS (R2) and parenchyma (R6) peak fluid velocity as parenchyma hydraulic conductivity varied. e Two vessel model parenchyma peak fluid velocity (R13) as pulse amplitude varied for a range of venous to arterial pulsatility ratios, ξ. f Two vessel model parenchyma peak fluid velocity (R13) as arterial and venous pulse timing (phase shift, \(\theta\)) varied

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