Which term describes tissue that is darker than adjacent tissues due to reduced reflectivity?

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Multiple Choice

Which term describes tissue that is darker than adjacent tissues due to reduced reflectivity?

Explanation:
In ultrasound imaging, tissue brightness on the image reflects how much sound the tissue returns as echoes. If a area is darker than the surrounding tissue because it reflects fewer echoes, that is described as hypoechoic. This sits between completely black, which is anechoic (no echoes), and similarly bright as surrounding tissue, which is isoechoic, or brighter, which is hyperechoic. So the description “darker than adjacent tissues due to reduced reflectivity” matches hypoechoic.

In ultrasound imaging, tissue brightness on the image reflects how much sound the tissue returns as echoes. If a area is darker than the surrounding tissue because it reflects fewer echoes, that is described as hypoechoic. This sits between completely black, which is anechoic (no echoes), and similarly bright as surrounding tissue, which is isoechoic, or brighter, which is hyperechoic. So the description “darker than adjacent tissues due to reduced reflectivity” matches hypoechoic.

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