02.05.2023 | Case Report
Free-water correction DTI-based tractography in brain tumor surgery: assessment with functional and electrophysiological mapping of the white matter
verfasst von:
Fabien Almairac, Drew Parker, Lydiane Mondot, Petru Isan, Marie Onno, Théodore Papadopoulo, Patryk Filipiak, Denys Fontaine, Ragini Verma
Erschienen in:
Acta Neurochirurgica
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Ausgabe 6/2023
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Abstract
Peritumoral edema prevents fiber tracking from diffusion tensor imaging (DTI). A free-water correction may overcome this drawback, as illustrated in the case of a patient undergoing awake surgery for brain metastasis. The anatomical plausibility and accuracy of tractography with and without free-water correction were assessed with functional mapping and axono-cortical evoked-potentials (ACEPs) as reference methods. The results suggest a potential synergy between corrected DTI-based tractography and ACEPs to reliably identify and preserve white matter tracts during brain tumor surgery.