Final answer:
To decrease radiation exposure during radiographs on a 10-year-old patient, a lead apron should be used, high-speed film should be employed, and radiographs should be prescribed at appropriate intervals.
Step-by-step explanation:
When taking radiographs on a 10-year-old patient, there are several measures that should be employed to decrease radiation exposure. One of the most effective methods is the use of a lead apron. This apron is placed over the patient to shield the surrounding tissue from unnecessary radiation. Another measure is to use high-speed film. Fast films require less exposure time, reducing the amount of radiation the patient is exposed to. Additionally, it is important to prescribe radiographs at appropriate intervals. In this case, prescribing radiographs every 3 years would help limit unnecessary radiation exposure.