What is the impact of prosthetic materials on digital image acquisition, and how is it managed?

• A. Prostheses reduce image quality but are always removed.
• B. Prostheses have no effect on image acquisition.
• C. Prostheses can cause artifacts or beam-hardening.
• D. Prostheses can cause artifacts or beam-hardening; managed by adjusting technique, using artifact reduction tools, or alternative views.

Answer: (C)

Prosthetic materials change how X-rays interact with the scene, often producing artifacts in the image. Metal and other high-density prostheses absorb and scatter photons unevenly, which can create streaks, shadows, or bright spots that obscure nearby anatomy. In CT this is described as beam-hardening, where the spectrum shifts toward higher energies after passing through metal, exaggerating artifact near the prosthesis. In practice, this impact is managed by adjusting technique (exposure factors and geometry), using artifact-reduction tools or algorithms, and sometimes acquiring alternative views or imaging methods to minimize the artifact. The essential point is that prostheses can indeed cause artifacts or beam-hardening, and awareness of management options helps preserve diagnostic quality.