Backscatter
Backscatter
Backscatter (pronounced: /ˈbakˌskatər/) is a term used in medical imaging to describe the reflection or scattering of radiation or other forms of energy back to the direction from which it came.
Etymology
The term "backscatter" is derived from the English words "back" and "scatter", which literally means to scatter back. It was first used in the context of radiation and imaging in the mid-20th century.
Definition
Backscatter is a phenomenon in which radiation or other forms of energy are deflected and scattered in the opposite direction upon hitting a surface or medium. In the field of radiology, backscatter can affect the quality of an image by creating a type of noise or artifact. This is particularly relevant in X-ray imaging and Computed Tomography (CT) scans, where backscatter can lead to a decrease in image quality.
Related Terms
- Scatter radiation: This is a type of secondary radiation that occurs when the primary radiation beam comes into contact with the surface and scatters in different directions. Backscatter is a type of scatter radiation.
- Radiation: This is the emission of energy as electromagnetic waves or as moving subatomic particles. In medical imaging, radiation is used to create images of the body's internal structures.
- Radiology: This is a branch of medicine that uses imaging technology to diagnose and treat diseases within the body.
- Computed Tomography (CT): This is a type of imaging procedure that uses special x-ray equipment to create detailed pictures, or scans, of areas inside the body.
External links
- Medical encyclopedia article on Backscatter
- Wikipedia's article - Backscatter
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