Fabrication of a Positional Brain Shift Phantom Through the Utilization of the Frozen Intermediate Hydrogel State

Fabrication of a positional brain shift phantom through the utilization of the frozen intermediate hydrogel state

“…However, the extent to which the solid fraction affects PBS is not clear, since the mechanical properties of the SAS are both difficult to measure and difficult to then implement (and vary) in either phantom or computational models. Recreating the solid fraction was investigated, but no means could be found to fabricate such a complex interface with the appropriate mechanical properties (see Potts, 2020). In addition to the simplifications of the SAS, the brain was also represented by a single material, with no differentiation between white and grey matter.…”

“…In addition to the simplifications of the SAS, the brain was also represented by a single material, with no differentiation between white and grey matter. However, there is little evidence of differing properties at low strain rates (Potts, 2020) and, therefore, this simplification likely had a minimal effect in simulating PBS. Lastly, there is also the question of to what degree the poroelasticity of the brain was reproduced in the phantom.…”