ARDMS (American Registry for Diagnostic Medical Sonography) Practice Test

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Which transducer produced the shape of this image?

  1. Linear sequential array

  2. Vector array

  3. Annular phased array

  4. Convex array

The correct answer is: Convex array

The correct choice is D. A convex array transducer is characterized by a curved probe that produces a fan-shaped beam, creating a wider field of view. This type of transducer is typically used in abdominal and OB/GYN imaging. Option A, the linear sequential array, would produce a thin, straight beam and is commonly used in vascular and musculoskeletal imaging. Option B, the vector array, is similar to the convex array but allows for more flexibility in beam steering. Option C, the annular phased array, is used in endovaginal and neurosonography, but would not produce the shape of the image shown.

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