How is MRI contrast administered for a brain MRI?

Intravenously

MRI contrast, also known as gadolinium-based contrast agents (GBCAs), is administered intravenously (IV) for a brain MRI. A small amount of the contrast agent is injected into a vein in your arm, and it circulates through your bloodstream to the brain. The contrast agent helps to enhance the visibility of certain structures and tissues in the brain, making it easier for the radiologist to identify abnormalities.