With annular phased array transducers the next larger crystal after the inner crystal is fired down the same scan line and information only from its ______ is stored.

With annular phased array transducers the next larger crystal after the inner crystal is fired down the same scan line and information only from its ______ is stored.

• A. Focal zone
• B. Aperture
• C. Phase
• D. Delay

Answer: (D)

In annular phased arrays, beamforming relies on time delays applied to each concentric ring to synthesize a focused beam along a scan line. When the next larger crystal is fired along the same line, the system records the delay value for that crystal so its echoes can be aligned in time with echoes from the other rings. That delay information is what’s stored, guiding how the signals are summed to form the image. It’s not the focal zone, the physical aperture, or a separate phase value being stored. So the information stored for each ring is the delay.

In annular phased arrays, beamforming relies on time delays applied to each concentric ring to synthesize a focused beam along a scan line. When the next larger crystal is fired along the same line, the system records the delay value for that crystal so its echoes can be aligned in time with echoes from the other rings. That delay information is what’s stored, guiding how the signals are summed to form the image. It’s not the focal zone, the physical aperture, or a separate phase value being stored. So the information stored for each ring is the delay.