How does patient positioning affect the appearance of motion artifacts and overall image quality in DR?

• A. Poor Positioning Increases Motion and Misalignment, Magnification Errors, and Tissue Overlap
• B. Positioning Has No Effect on Motion
• C. Positioning Only Affects Patient Comfort
• D. Good Positioning Reduces Exposure Time

Answer: (A)

Positioning determines how the patient’s anatomy sits in relation to the x‑ray beam and the detector. When positioning is poor, the anatomy may be off-center or angled, which changes projection and increases distortion. This leads to magnification errors when parts are farther from the detector and to tissue overlap where structures that should be separate appear superimposed. Motion artifacts can also become more likely because awkward or uncomfortable positions can make it harder for the patient to stay still, often requiring longer exposure or repeats. Good, stable positioning keeps the anatomy properly aligned, minimizes distortion and overlap, and reduces the chance of motion-related blur, resulting in a clearer, more diagnostic image.