Which condition must be satisfied for gonadal shielding to be appropriate?

• A. The shield will not interfere with the diagnosis
• B. The patient is under 18
• C. The gonads lie within 5 cm of the primary beam
• D. Shielding is always used

Answer: (A)

Gonadal shielding should be considered only if placing the shield will not compromise the diagnostic quality of the image. The purpose is to reduce gonadal radiation without obscuring important anatomy or degrading image clarity. If shielding would blur, shadow, or obscure structures needed for diagnosis, it would do more harm than good, so it isn’t appropriate. Therefore, the key requirement is that the shield does not interfere with making an accurate diagnosis.

Age, proximity of the gonads to the primary beam, or a blanket rule that shielding is always used are not the determining factors; shielding is used selectively based on whether it can reduce dose without affecting image quality.