Name three common radiographic artifacts.

• A. Motion blur, image distortion, and exposure artifacts
• B. Motion blur, grid artifacts, and imaging noise
• C. Positioning errors, patient motion, and exposure flicker
• D. Motion blur, grid artifacts, and positioning errors

Answer: (D)

The main idea is that many radiographic artifacts come from how the patient and the equipment interact during the exposure. Three common problems are motion blur, grid artifacts, and positioning errors.

Motion blur happens whenever the patient moves during the exposure or holds a breath inconsistently. Even a brief movement can smear fine details and obscure structures, reducing sharpness and diagnostic value. To prevent it, use the shortest practical exposure time, give clear breathing instructions, and use immobilization or supportive positioning aids when needed.

Grid artifacts arise from the use of a radiographic grid to reduce scatter. If the grid is not properly centered, aligned, or is damaged, lines or patterns can appear across the image. This is why careful grid setup matters: center the beam to the grid, choose the correct SID and grid ratio for the exam, and ensure the grid is in good condition and correctly oriented.

Positioning errors are about how the patient and anatomy are aligned with the image receptor and the X-ray beam. Incorrect placement or rotation changes the projection, magnification, and contour of the anatomy, creating distortion or misrepresentation that can mimic pathology or hide it. To avoid this, position the patient accurately for the desired view, align the part with the CR and detector, and verify that the projection matches the exam protocol.

Other potential artifacts like distortions or noise exist, but motion blur, grid artifacts, and positioning errors are the most routinely encountered in practice and are the best three to name for common radiographic artifacts.