MRI scans
MRI Scans
MRI Scans (pronounced: /ɛmɑːrˈaɪ/), also known as Magnetic Resonance Imaging, is a medical imaging technique used in Radiology to form pictures of the anatomy and the physiological processes of the body. The term "MRI" is derived from the English words 'Magnetic', 'Resonance', and 'Imaging'.
Etymology
The term "Magnetic Resonance Imaging" was coined by the American physician Raymond Damadian who is credited with inventing the first MRI scanner. The term is derived from the fact that the technique uses magnetic fields and radio waves to generate images of the body.
Procedure
An MRI scan uses a large magnet and radio waves to look at organs and structures inside your body. The patient lies on a table that slides into a tunnel-shaped scanner. The Magnetic field aligns atomic particles in the body part being examined. Then, radio waves are passed through the body to disturb this alignment. When the radio waves are turned off, the MRI sensors detect the energy released as the particles return to their normal alignment.
Related Terms
- Radiology: The medical specialty that uses medical imaging to diagnose and treat diseases within the body.
- Magnetic Field: A field of force produced by electric charge in motion.
- Radio Waves: A type of electromagnetic radiation with wavelengths in the electromagnetic spectrum longer than infrared light.
See Also
- Computed Tomography (CT): Another common imaging method used in medicine.
- Ultrasound: A medical imaging technique that uses high-frequency sound waves to visualize the internal organs of the body.
External links
- Medical encyclopedia article on MRI scans
- Wikipedia's article - MRI scans
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