Which shape is commonly associated with the imaging field of phased array transducers?

Which shape is commonly associated with the imaging field of phased array transducers?

• A. Circular
• B. Rectangular
• C. Triangular
• D. Sector-shaped

Answer: (D)

Phased array transducers steer and focus the beam electronically across a small footprint, sending beams at different angles from adjacent elements. This causes the interrogated region to fan out like a wedge, so the imaging field appears sector-shaped on the display. The sector shape reflects the fan-beam geometry created by electronic steering, unlike the rectangular field typical of linear arrays or other shapes seen with different transducer geometries.

Phased array transducers steer and focus the beam electronically across a small footprint, sending beams at different angles from adjacent elements. This causes the interrogated region to fan out like a wedge, so the imaging field appears sector-shaped on the display. The sector shape reflects the fan-beam geometry created by electronic steering, unlike the rectangular field typical of linear arrays or other shapes seen with different transducer geometries.