The ability to separate echoes from reflectors close together in depth is called:

The ability to separate echoes from reflectors close together in depth is called:

• A. Sensitivity
• B. Noise
• C. Resolution
• D. Dynamic Range

Answer: (C)

The ability to separate echoes from reflectors that are close in depth is about resolution. Resolution describes how well the ultrasonic system can distinguish two separate reflectors along the beam path. If the pulse is long or the bandwidth is narrow, closely spaced reflectors may produce overlapping echoes and look like one reflector. Using shorter pulses with a broader bandwidth improves axial (depth) resolution, so two nearby reflectors produce two distinct echoes instead of a single blended one. The other terms don’t capture this distinguishing capability: sensitivity refers to detecting small echoes, noise is random background signal, and dynamic range is the range between the smallest and largest signals the system can handle.

The ability to separate echoes from reflectors that are close in depth is about resolution. Resolution describes how well the ultrasonic system can distinguish two separate reflectors along the beam path. If the pulse is long or the bandwidth is narrow, closely spaced reflectors may produce overlapping echoes and look like one reflector. Using shorter pulses with a broader bandwidth improves axial (depth) resolution, so two nearby reflectors produce two distinct echoes instead of a single blended one. The other terms don’t capture this distinguishing capability: sensitivity refers to detecting small echoes, noise is random background signal, and dynamic range is the range between the smallest and largest signals the system can handle.