SENSORY-MOTOR CORTEX - CORRELATION OF PRESURGICAL MAPPING WITH FUNCTIONAL MR-IMAGING AND INVASIVE CORTICAL MAPPING

PURPOSE: To describe a clinically useful application of functional mag netic resonance (MR) imaging-presurgical mapping of the sensory motor cortex-and to validate the results with established physiologic techni ques. MATERIALS AND METHODS: Functional MR mapping of the sensory moto r cortex was performed in two women, aged 24 and 38 years. Both had in tractable, simple partial motor seizures due to tumors located in or n ear the sensory motor cortex. They subsequently underwent invasive cor tical mapping-direct cortical stimulation and/or sensory-evoked-potent ial recording-to localize the affected sensory motor area prior to tum or resection. RESULTS: In both patients, the functional MR study demon strated task activation of the sensory motor cortex. In both cases, re sults of cortical functional mapping with invasive techniques matched those obtained with functional MR imaging. CONCLUSION: Presurgical map ping of the sensory motor cortex is a potentially useful clinical appl ication of functional MR imaging.