We investigated the feasibility of presurgical mapping in patients with brain tumors using real-time rsfMRI analysis methodology in combination with high-speed multi-band EPI. The objective was to map sensorimotor and language resting state networks in the vicinity of brain tumors and to monitor data quality online. We validated this approach in comparison with tfMRI and intra-operative electrocorticography (ECog). The data in patients show a high degree of consistency between resting state connectivity, task-based activation and ECS localization of motor cortex and Broca’s area. Localization of Wernicke’s area was more variable, both in rsfMRI and tfMRI.
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