Diagnostic Medical Sonography (DMS) Practice Exam

In propagation terms, tissue is often described as which of the following?

Dense connective tissue Soft tissue Medium Tissue matrix

Correct Answer:

Medium

Explanation:

In propagation terms, tissue is described as a medium—the material through which ultrasound waves travel. Thinking of tissue as a medium is what lets us discuss how sound speed, attenuation, and impedance depend on the tissue’s properties, and how those properties shape echo formation and image generation. Dense connective tissue and soft tissue are histologic labels describing composition, not the propagation descriptor used in ultrasound physics. Tissue matrix isn’t a standard term for how waves propagate through the body. So the best description is medium, because it conveys the concept of a material through which sound moves and interacts.

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