Functional magnetic resonance imaging of lateral geniculate nucleus and visual cortex at 4 Tesla in a patient with homonymous hemianopia

Abstract

We present the functional magnetic resonance imaging findings at 4 Tesla in a 49-year-old male patient with a right thalamic tumor and left homonymous hemianopia. Markedly asymmetric activation of the lateral geniculate nucleus and visual cortex was found, and a pregeniculate or geniculate lesion was suspected from these findings. Functional magnetic resonance imaging at a high magnetic field can be useful in localizing a lesion responsible for visual loss.