Approx. what % of cases will require MAJOR adjustments to a radiographic technique chart?

• A. 5
• B. 25
• C. 50
• D. 10

Answer: (D)

Technique charts are built to provide a reliable starting point for exposure factors on typical patients, so you can get a good image with minimal repeats. Most patients fall near that standard, and you make only small tweaks for slight differences in size, positioning, or equipment. A major adjustment means a substantial change in exposure factors to compensate for a patient who is much larger or smaller than normal, or for a projection or condition that alters image appearance enough that the chart’s baseline wouldn’t produce an acceptable result. In practice, these large changes aren’t needed in the majority of cases; they’re required only occasionally. Therefore, about 10% of cases will call for a major adjustment to the technique chart. The other percentages would imply more frequent or less frequent large changes than what is typically observed in clinical use.