👉 In nuclear medicine, a lipochromogen is a substance that acts as a tracer or contrast agent for imaging purposes. It's used in X-ray and CT scans to visualize blood vessels and other structures within the body. Lipochromogens are known for their high sensitivity, specificity, and short half-life, which allows them to be used with various techniques like diffusion-weighted MRI (DWI) and magnetic resonance imaging (MRI).