Which imaging mode may show a mirror image artifact?

Which imaging mode may show a mirror image artifact?

• A. B-mode
• B. Spectral Doppler
• C. Color Doppler
• D. All of the above

Answer: (D)

Mirror image artifacts occur when a strong reflector creates a secondary echo path, causing a ghost image to appear on the opposite side of that reflector. This phenomenon isn’t tied to a single imaging mode—the same physics can produce a duplicate structure in any mode you’re using. In B‑mode, you might see a duplicated anatomy across a bright interface like the diaphragm. In spectral Doppler, a mirrored Doppler signal or phantom vessel can appear on the far side of the reflector. In color Doppler, the flow pattern may also appear duplicated across the reflector. Because the artifact arises from the echo path and strong reflectors rather than the specific mode, all of these modes can show a mirror image. To reduce it, adjust the transducer angle, move the reflector out of the field, or use imaging techniques like harmonic imaging to lessen the artifact.

Mirror image artifacts occur when a strong reflector creates a secondary echo path, causing a ghost image to appear on the opposite side of that reflector. This phenomenon isn’t tied to a single imaging mode—the same physics can produce a duplicate structure in any mode you’re using. In B‑mode, you might see a duplicated anatomy across a bright interface like the diaphragm. In spectral Doppler, a mirrored Doppler signal or phantom vessel can appear on the far side of the reflector. In color Doppler, the flow pattern may also appear duplicated across the reflector. Because the artifact arises from the echo path and strong reflectors rather than the specific mode, all of these modes can show a mirror image. To reduce it, adjust the transducer angle, move the reflector out of the field, or use imaging techniques like harmonic imaging to lessen the artifact.