![Color-3d-brain.jpg](/sites/default/files/styles/large/public/Neuro%20stroke.jpg.webp?itok=PDE1j-hP)
Co-registered 3D rendered ultrasound (greyscale) and color Doppler (red and blue) coronal image of a mouse brain during ligation of the right common carotid artery. The red and blue color represent blood flow velocity and direction clearly showing impaired blood flow in the right hemisphere.