What is the fundamental principle behind attenuation artefacts in ultrasound imaging?
Understand the Problem
The question is asking about the underlying concepts that explain attenuation artefacts in ultrasound imaging. It's looking for an explanation of how these artefacts occur due to the absorption and scattering of the ultrasound waves as they travel through different tissues.
Answer
Sound waves lose energy as they travel through tissue causing attenuation artifacts in ultrasound imaging.
The fundamental principle behind attenuation artifacts in ultrasound imaging is that sound waves lose energy, primarily through absorption, as they travel through tissue. This results in a loss of signal intensity, causing certain areas of the image to appear hypoechoic or anechoic.
Answer for screen readers
The fundamental principle behind attenuation artifacts in ultrasound imaging is that sound waves lose energy, primarily through absorption, as they travel through tissue. This results in a loss of signal intensity, causing certain areas of the image to appear hypoechoic or anechoic.
More Information
Attenuation causes variations in image quality, often manifesting as darker or undefined areas, as the energy is absorbed and converted into heat or scattered, limiting the depth of effective ultrasound imaging.
Tips
Mistaking all image darkening as attenuation. Other factors like shadowing from structures (e.g., bones) can also cause similar artifacts.
Sources
- Ultrasound artifacts | Radiology Reference Article | Radiopaedia.org - radiopaedia.org
- Basic Principles of Ultrasound Physics and Artifacts Made Easy - pocus101.com
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