what are the artefacts exactly? It looks like the back of the brain was not segmented. Is there something in the raw data? Otherwise, look though the trouble shooting tutorial.
On 2/18/19 12:19 PM, Backhausen, Lea wrote:
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Dear FreeSurer experts,
we recently did a simultaneous measurement of MRI and EEG in adolescent patients with obsessive-compulsive-disorder. Due to the electrode gel we see image artifacts mostly in parietal and frontal regions (please see attached images).
Has anyone experience with these kinds of measurements? Is there a way to fix the artifacts?
We are worried that the calculation of eTIV will also be corrupted and we cannot use it to correct for head size in the subcortical structures (which are our ROIs, mostly striatum).
Thanks a lot for any advice!
Lea
Lea Backhausen
Ph.D. Student (M.Sc. Psychology/Neuroscience)
Department of Child and Adolescent Psychiatry, Faculty of Medicine of the TU Dresden, Germany http://www.uniklinikum-dresden.de http://www.uniklinikum-dresden.de/
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