Which term describes weak reflections that appear dark on the image?

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Study for the Image Modalities Test to enhance your knowledge of various imaging techniques. Prepare with flashcards and multiple choice questions, each accompanied by hints and explanations. Get ready to ace your exam!

Multiple Choice

Which term describes weak reflections that appear dark on the image?

Explanation:
In ultrasound, brightness on the image reflects how strongly tissue echoes the sound waves. When a region returns fewer echoes, it looks darker than its surroundings. The term for tissue with lower echogenicity than the surrounding tissue is hypoechoic. It’s distinct from anechoic (no echoes, truly black), isoechoic (same brightness as surrounding tissue), and hyperechoic (brighter than surrounding tissue). So a region with weak reflections that appears dark is best described as hypoechoic.

In ultrasound, brightness on the image reflects how strongly tissue echoes the sound waves. When a region returns fewer echoes, it looks darker than its surroundings. The term for tissue with lower echogenicity than the surrounding tissue is hypoechoic. It’s distinct from anechoic (no echoes, truly black), isoechoic (same brightness as surrounding tissue), and hyperechoic (brighter than surrounding tissue). So a region with weak reflections that appears dark is best described as hypoechoic.

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