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Abstract #2443

FACT, Probability Maps and Gibbs Tracking for Preoperative Fiber Tracking in Epilepsy Surgery

Irina Mader1, Constantin Anastasopoulos1, Valerij G. Kiselev2, Andreas Schulze-Bonhage3, Marco Reisert2

1Clinic for Neuroradiology, University Hospital Freiburg, Freiburg, Germany; 2MR Physics, Department of Radiology, University Hospital Freiburg, Freiburg, Germany; 3Section for Pre-surgical Epilepsy Diagnostics, Clinic for Neurosurgery, University Hospital Freiburg, Freiburg, Germany

Problem: The protection of functional fiber bundles is essential in epilepsy surgery. The aim was to compare FACT, probability maps and Gibbs tracking in their relevance for the neurosurgeon. Methods: Ten patients received pre-operative fiber tracking (5 corticospinal tract, 5 optic radiation). Results: Probability maps and GIBBS tracking were successful for all fiber structures on the healthy and the pathologic side, whereas FACT was only successful in 5 cases on the pathological side and 6 on the healthy side. Conclusion: Probability maps and Gibbs tracking are superior to FACT. A higher specificity of Gibbs cannot be shown at the moment.