Which placement is most appropriate for a fetal dosimeter worn by a pregnant radiology technologist?

Which placement is most appropriate for a fetal dosimeter worn by a pregnant radiology technologist?

• A. On the collar
• B. On the wrist
• C. On the ankle
• D. At waist level, under the protective apron

Answer: (D)

When a radiology worker is pregnant, the fetal dosimeter should be positioned where it can best reflect the dose reaching the fetus. The lead apron shielding reduces exposure to the abdomen, so placing the dosimeter at the waist level under the apron captures the residual dose that penetrates the shield and reaches the uterus. This placement provides a realistic estimate of fetal exposure from scatter and leakage, rather than from direct beam that’s blocked by the apron. Placing the badge on the collar, wrist, or ankle wouldn’t measure the fetal dose accurately, since those locations are not representative of what the fetus receives and can be influenced by different exposure paths. By keeping the badge at the waist under the protective apron, you get a monitoring location that aligns with the area of concern while remaining shielded.

When a radiology worker is pregnant, the fetal dosimeter should be positioned where it can best reflect the dose reaching the fetus. The lead apron shielding reduces exposure to the abdomen, so placing the dosimeter at the waist level under the apron captures the residual dose that penetrates the shield and reaches the uterus. This placement provides a realistic estimate of fetal exposure from scatter and leakage, rather than from direct beam that’s blocked by the apron.

Placing the badge on the collar, wrist, or ankle wouldn’t measure the fetal dose accurately, since those locations are not representative of what the fetus receives and can be influenced by different exposure paths. By keeping the badge at the waist under the protective apron, you get a monitoring location that aligns with the area of concern while remaining shielded.