Which transducer type has a curved aperture designed for a wider field of view and deeper penetration?

• A. Linear array
• B. Phased array
• C. Endocavity transducers
• D. Curved (curvilinear) array

Answer: (D)

The shape of the transducer’s aperture governs how wide a view you can capture and how deep the ultrasound can penetrate. A curved (curvilinear) array has a curved footprint that fans out the beam, giving a wide field of view. Because it can cover more area with a longer effective aperture and can operate effectively at lower frequencies, it also achieves deeper penetration. That combination—broad coverage plus the ability to image deeper structures—is why the curved array is designed for wider field of view and deeper penetration, making it the best match for abdominal scanning and similar applications.

In contrast, a linear array has a flat footprint that provides high-resolution images over a smaller area, a phased array uses a compact, steerable footprint for sector-shaped images but not inherently wide field, and endocavity transducers are small and optimized for internal, shallow views with limited field of view.