Attenuator
Attenuator
Attenuator (/əˈtɛn.juː.eɪ.tər/) is a device that reduces the amplitude or power of a signal without appreciably distorting its waveform. In the medical field, attenuators are often used in imaging systems such as Computed Tomography (CT) and Magnetic Resonance Imaging (MRI) to control the intensity of the radiation beam.
Etymology
The term "attenuator" comes from the Latin word attenuare, which means "to thin or weaken". It was first used in the context of signal processing in the early 20th century.
Related Terms
- Amplitude: The maximum extent of a vibration or oscillation, measured from the position of equilibrium.
- Computed Tomography (CT): A type of imaging that uses special x-ray equipment to make cross-sectional pictures of your body.
- Magnetic Resonance Imaging (MRI): A type of imaging that uses a magnetic field and radio waves to create detailed images of the organs and tissues within your body.
- Radiation: The emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles that cause ionization.
- Signal Processing: The analysis, interpretation, and manipulation of signals. In the medical field, signal processing techniques are often used to improve the quality of medical images.
External links
- Medical encyclopedia article on Attenuator
- Wikipedia's article - Attenuator
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