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Abstract #3535

What are the consequences of ignoring non-Gaussian diffusion in models of convection-enhanced drug delivery to the human brain?

Eirini Messaritaki1, S Umesh Rudrapatna2, Najmus S Iqbal1, Hannah Furby1,2,3, Emma Yhnell1, Claudia Metzler-Baddeley2, William P Gray1, and Derek K Jones2,4

1Medicine, Cardiff University, Cardiff, United Kingdom, 2Psychology, Cardiff University, Cardiff, United Kingdom, 3Huntington's Disease Centre, UCL, London, United Kingdom, 4Psychology, Australian Catholic University, Melbourne, Australia

Convection-enhanced drug delivery to the human brain is a promising method for treating neurodegenerative diseases and brain tumors. Accurate predictions of the drug concentration via computational fluid dynamics models are essential, and models not accounting for diffusion non-Gaussianity give predictions that are not in good enough agreement with experimental results. We use a fluid dynamics model recently presented in the literature, which accounts for diffusion non-Gaussianity, to calculate the differences with models that do not account for it, in data from pre-symptomatic Huntington’s disease patients and metastatic brain tumor patients. We make recommendations on the use of fluid dynamics models in the clinical setting.

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