What is another name for the Hyperechoic artifact distal to a fluid structure?

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Multiple Choice

What is another name for the Hyperechoic artifact distal to a fluid structure?

Explanation:
Posterior acoustic enhancement is the hyperechoic artifact seen distal to a fluid structure. Fluid-filled areas are poor reflectors and cause minimal attenuation, so more sound passes beyond them and the tissues behind become brighter. This increase in echogenicity behind the fluid is the enhancement artifact (also called posterior enhancement or through transmission). Other artifacts describe different phenomena: refraction is bending of the beam at interfaces, shadowing is darkening distal to dense material, and speckle is the grainy texture from interference. Enhancement best fits the described situation because it directly accounts for the brighter area distal to a fluid structure.

Posterior acoustic enhancement is the hyperechoic artifact seen distal to a fluid structure. Fluid-filled areas are poor reflectors and cause minimal attenuation, so more sound passes beyond them and the tissues behind become brighter. This increase in echogenicity behind the fluid is the enhancement artifact (also called posterior enhancement or through transmission). Other artifacts describe different phenomena: refraction is bending of the beam at interfaces, shadowing is darkening distal to dense material, and speckle is the grainy texture from interference. Enhancement best fits the described situation because it directly accounts for the brighter area distal to a fluid structure.

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