What can you do to enhance the visibility of a specular reflector?

What can you do to enhance the visibility of a specular reflector?

• A. Scan with oblique incidence
• B. Scan with perpendicular incidence
• C. Scan with lowest possible frequency
• D. Increase the distance to the reflector

Answer: (B)

Specular reflectors act like mirrors for ultrasound, reflecting energy in a specific direction. The strongest return to the transducer happens when the beam meets the surface at normal (perpendicular) incidence, so the reflected wave travels straight back to the transducer. When you scan at oblique angles, most of the reflected energy is sent away from the transducer, making the reflector harder to see. While choosing a lower frequency or changing distance can affect overall image quality, they don’t improve the backscattered signal from a smooth reflector as reliably as aligning the beam perpendicularly to the surface.

Specular reflectors act like mirrors for ultrasound, reflecting energy in a specific direction. The strongest return to the transducer happens when the beam meets the surface at normal (perpendicular) incidence, so the reflected wave travels straight back to the transducer. When you scan at oblique angles, most of the reflected energy is sent away from the transducer, making the reflector harder to see. While choosing a lower frequency or changing distance can affect overall image quality, they don’t improve the backscattered signal from a smooth reflector as reliably as aligning the beam perpendicularly to the surface.