A transducer that produces images with a curved footprint is most likely which type?

• A. Linear array
• B. Sector
• C. Phased array
• D. Curved array

Answer: (D)

A curved-footprint transducer uses elements laid out along a curved surface, so the emitted ultrasound beam fans out from that curved aperture. That geometry makes the contact area with the skin itself curved, producing images with a curved footprint. Among the options, only a curved array has this physical curved face, whereas a linear array has a flat face and a more rectangular footprint, and the others don’t inherently impose a curved skin footprint. This curved design also supports wide coverage in a single sweep, which is a practical reason it’s used for abdominal and other wide-field imaging.