Presentation
Severe lower back pain.
Patient Data
Age: 30 years
Gender: Male
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On the lateral projection, the sacrum is seen to have a superimposition.
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Case Discussion
A second exposure was done without "erassour" after the first exposure resulted in an error that prompted a repeat which resulted in the artifact seen above .
X-ray artifacts present in a variety of ways and image compositing (or twin/double exposure) is common due to double exposure of the same film or plate. A repeat exposure in Computed radiography and film radiography without erasing the imaging plate or changing the film after the first exposure can result in such an artifact.
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