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Computer modelling of CSF flow in the subarachnoid space
E E Jacobson1, D F Fletcher, I H Johnston
1Department of Surgery, The Madeline Foundation Laboratory, NSW 2006, Australia.
Abstract:
Computer modelling has been undertaken to determine the resistance to flow in the subarachnoid space (SAS) and to investigate its contribution to the total pressure drop. A Computational Fluid Dynamics model has been used to determine the pressure drop as a function of both the flow rate and the permeability of the subarachnoid space. The conclusion is that the SAS contributes about 1-5% of the total CSF flow resistance. However, scarring of the arachnoid fibres could increase the flow resistance considerably.
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