ARDMS Practice Test 2025 – Comprehensive All-in-One Guide to Diagnostic Medical Sonography Success!

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What is a common artifact seen in ultrasound imaging?

Shadowing

Shadowing is a common artifact in ultrasound imaging that occurs when sound waves encounter a strong reflection, generally from dense or calcified structures. This phenomenon leads to a reduction or absence of echoes from deeper tissues directly behind the structure, resulting in a dark area on the ultrasound image. It is most often observed in cases involving bones or calcified lesions, where the dense material reflects most of the ultrasound energy back, preventing it from reaching deeper tissues.

This effect is useful in clinical practice because it helps to identify the presence of highly reflective structures but can also lead to misinterpretation if clinicians do not recognize it as an artifact. Understanding shadowing and its implications is crucial for accurately interpreting ultrasound images and making effective diagnostic decisions.

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