Male, 48 years old, with seizures and a brain lesion. Functional MRI is requested for presurgical planning. Sensorimotor cortical activation of the hand maps as expected along the pre- and postcentral gyri. This area of activation is posterior to and contiguous with the margin of the patient's right frontal lobe lesion. In response to foot movement, cortical activation is elicited at the medial most aspect of the pre- and postcentral gyri, right side more than left. Spotty activation is also seen elsewhere in the cerebral hemispheres.Cortical activation related to facial movement is demonstrated at the inferior lateral most aspect of the pre- and postcentral gyri. On the right, this area of activation is posterior and inferior to the lesion margin.
Sensorimotor cortical activation is elicited identifying the pre- and postcentral gyri bilaterally.