Which step reduces exposure during radioisotope administration?

• A. Minimizing handling time
• B. Using unshielded syringes
• C. Increasing handling time
• D. Removing shielding

Answer: (A)

Reducing exposure hinges on limiting the time you spend near the radioactive material. When administering a radioisotope, the amount of radiation dose you receive is tied to how long you handle or are in the vicinity of the source. By minimizing the handling time—planning, preparing everything in advance, and performing the procedure efficiently—you cut the total time of exposure, which lowers the dose you receive. In contrast, using unshielded syringes, increasing handling time, or removing shielding would all raise exposure rather than reduce it. Shielding and keeping a safe distance are also important, but among these options, shortening the time spent handling the material is the most effective way to reduce exposure.