What term describes tissue that has the same echogenicity as surrounding tissue?

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Multiple Choice

What term describes tissue that has the same echogenicity as surrounding tissue?

Explanation:
On ultrasound, echogenicity describes how bright a tissue appears because of how much sound it reflects. When a tissue has the same brightness as the surrounding tissue, it is isoechoic. This makes its borders harder to distinguish since there’s no contrast in brightness with neighboring structures. In contrast, tissues that are brighter than their surroundings are hyperechoic, those that are darker are hypoechoic, and tissues with no internal echoes (fluid) are anechoic. So the term for tissue that matches the surrounding echogenicity is isoechoic.

On ultrasound, echogenicity describes how bright a tissue appears because of how much sound it reflects. When a tissue has the same brightness as the surrounding tissue, it is isoechoic. This makes its borders harder to distinguish since there’s no contrast in brightness with neighboring structures. In contrast, tissues that are brighter than their surroundings are hyperechoic, those that are darker are hypoechoic, and tissues with no internal echoes (fluid) are anechoic. So the term for tissue that matches the surrounding echogenicity is isoechoic.

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