How does the exposure time for radiographic images differ between adults and children?

The exposure time for radiographic images is typically reduced for children compared to adults primarily due to the differences in body size, tissue density, and radiation sensitivity. Children have smaller and thinner anatomical structures, which means that a moderate amount of radiation can produce sufficient image quality. As a result, exposure times for children are often cut to minimize the amount of radiation they receive while still producing clear and diagnostic images.

Specifically, reducing the exposure time for children by approximately one-third is a common practice. This adjustment is made to ensure a balance between obtaining adequate image quality and protecting young patients from unnecessary radiation exposure. It reflects the understanding that children's developing tissues are more sensitive to radiation, warranting continued efforts to limit exposure to the lowest feasible levels.