What are the potential consequences of excessive edge enhancement on radiographic images?

• A. It reduces noise without affecting edges.
• B. It always improves diagnostic accuracy.
• C. It can create halos and artificially sharpen structures, potentially leading to misdiagnosis.
• D. It eliminates grid artifacts.

Answer: (C)

Edge enhancement works by boosting the high-frequency parts of the image to make edges look sharper. When this is pushed too far, it overshoots and creates halos and ringing around edges. Those artificial boundaries don’t reflect real anatomy, so normal structures can appear unnaturally crisp and new edge-like features may seem to indicate pathology. The result is a higher risk of misinterpretation, such as mistaking normal detail or noise for a fracture, lesion, or other finding. It also makes noise more conspicuous, which degrades overall image quality rather than improving it. Grid artifacts aren’t removed by edge sharpening, so excessive enhancement won’t fix those issues either.