Posters SFN

On SFN Neuroscience 2015 in Chicago I presented two posters.

One was about optimizing 7T fMRI in the basal ganglia during the stop signal task, the other one about modelling the HRF as to link its shape not computational cognitive models.


Fit T2* values using Python

Fit T2* values using Python

For a project I needed T2*-values for different tissues. These can be estimated by using T2-weighted images with different echo times (TEs). Some free tools exist like the Mipav-based CBS-tools and the web-based MRI Toolbox, but the Mipav toolkit is rather unstable (Java, ...) and needs everything to be in a very specific format. And desptite that I think web-based neuroimaging analysis is very cool, the MRI toolbox is not very flexible yet (you have to manually enter the measurements). Therefore, I set out to find out what this T2(*)-fitting actually does. Basically it fits the following signal decay function: $$S(TE) = S_0 e^{-TE/T2(*)}$$   Continue reading

In Limbo poster

Last week I presented my poster “An antidote to the imager’s fallacy, or how to identify brain areas that are in limbo” at the Organization for Human Brain Mapping conference in Hamburg. A wonderful week with many inspiring talks and meetings. You can download my poster here.



Iron Gradient Paper in Human Brain Mapping

My paper on an iron gradient in the Subthalamic Nucleus has been published in Human Brain Mapping.

de Hollander, G., Keuken, M. C., Bazin, P.-L., Weiss, M., Neumann, J., Reimann, K., Wähnert, M., Turner, R., Forstmann, B. U. and Schäfer, A. (2014), A gradual increase of iron toward the medial-inferior tip of the subthalamic nucleus. Hum. Brain Mapp.. doi: 10.1002/hbm.22485 (pdf)