Contrast agents, also known as contrast media, are substances used in medical imaging to enhance the visibility of structures or fluids within the body. They are typically used in imaging techniques such as X-rays, computed tomography (CT) scans, magnetic resonance imaging (MRI), and ultrasound. ### Purpose of Contrast Agents 1. **Enhancement**: They help differentiate between different tissues, organs, or blood vessels, making it easier to identify abnormalities, tumors, or other medical conditions.
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