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magnetic resonance imaging (MRI)

Definition

Magnetic Resonance Imaging (MRI) is a medical imaging technique used to visualize detailed internal structures of the body, utilizing powerful magnets and radio waves to generate images of organs and tissues. Unlike X-rays, it does not involve exposure to ionizing radiation.

Analogy

Imagine the body as a large, intricate city at night. An MRI works like a satellite using special signals (not just visible light) to view what's happening inside the buildings (organs and tissues), providing clear pictures without having to open anything up or turn on extra lights.

Related terms

Contrast Agent: A substance injected into the body that improves the contrast of structures or fluids within the body in medical images.

Radiology: The branch of medicine that deals with using various forms of radiant energy, including MRI, for diagnosing and treating diseases.

Tissue differentiation: The ability in medical imaging to distinguish between different types of body tissues based on their visual characteristics in images

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AP® and SAT® are trademarks registered by the College Board, which is not affiliated with, and does not endorse this website.