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Article History

Received: 29 September 2020

Accepted: 8 February 2021

First Online: 1 March 2021

Change Date: 18 May 2021

Change Type: Update

Change Details: The Open Access funding statement has been added to the funding section of this article.

Ethics approval and consent to participate

: For this study, we included 43 patients who underwent surgery at the Department of Neurosurgery of the Medical Center, University of Freiburg. The local ethics committee of the University of Freiburg approved the data evaluation, imaging procedures, and experimental design (protocols 100020/09 and 5565/15). The methods were carried out in accordance with the approved guidelines. Written informed consent was obtained from each patient. The studies were approved by an institutional review board.

: All authors read and approved the final manuscript.

: No potential conflicts of interest were disclosed by the authors.