Which transducer design is described as having a curved aperture on the radiating face, providing broader access to the field?

Which transducer design is described as having a curved aperture on the radiating face, providing broader access to the field?

• A. Linear array
• B. Phased array
• C. Tightly curved array
• D. Sector array

Answer: (C)

The shape of a transducer’s emitting surface determines how widely the ultrasound beams fan out from the probe. A curved aperture causes beams to leave at a range of angles, creating a wider, sector-like field. When the curvature is tight, this fan is even broader, giving broad access to the imaging field from a single position. That broad access is the hallmark of a tightly curved array—the geometry maximizes the angular range you can view without moving the probe much. In contrast, a linear array has a flat face and a mainly rectangular field, which limits angled access; a phased array steers beams electronically but with a more modest curved geometry; a sector array uses curved elements to produce a sector, but the description most closely matching broad field access from a compact, curved aperture points to the tightly curved array.

The shape of a transducer’s emitting surface determines how widely the ultrasound beams fan out from the probe. A curved aperture causes beams to leave at a range of angles, creating a wider, sector-like field. When the curvature is tight, this fan is even broader, giving broad access to the imaging field from a single position. That broad access is the hallmark of a tightly curved array—the geometry maximizes the angular range you can view without moving the probe much. In contrast, a linear array has a flat face and a mainly rectangular field, which limits angled access; a phased array steers beams electronically but with a more modest curved geometry; a sector array uses curved elements to produce a sector, but the description most closely matching broad field access from a compact, curved aperture points to the tightly curved array.