This document discusses an ultrasound image of a fetal brain between 11-13 weeks gestation. The image shows the corpus callosum and several key blood vessels, including the pericallosal artery, basilar artery, internal carotid artery, vein of Galen, straight sinus, superior sagittal sinus, torcular herophili, and vertebral artery. Doppler imaging was used to sensitively image blood flow in this sagittal view of the normal developing fetal brain.