| | Cancer | Radiation Therapy
X-ray Exposure Time: Impact on Image Quality & Detail
Effect of Insufficient X‑ray Exposure Time
If the X‑ray tube is energized for too short a duration, the image will be underexposed:
- Overall dark/low‑contrast appearance.
- Loss of fine detail (trabecular pattern, soft‑tissue interfaces).
- Increased quantum mottle (grainy noise).
- Potential missed pathology (fractures, nodules, pneumothorax).
Proper technique (kVp, mAs, distance) ensures adequate photon flux for diagnostic quality. Automatic exposure control (AEC) helps standardize exposure.
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