The term for shields suspended above the area of interest to cast a shadow is:

The term for shields suspended above the area of interest to cast a shadow is:

• A. Shadow shield
• B. Contact shield
• C. Floor shield
• D. Table shield

Answer: (A)

The concept here is shielding that protects tissues without blocking the area you want to image by using the shadow created by a shield placed above the patient. A shield suspended above the area of interest works by intercepting part of the beam so that its edge projects a shadow onto the patient’s skin. This shadow covers radiosensitive tissues outside the region being imaged (for example, the gonads during pelvic imaging) while the area of interest remains exposed for imaging. That is why this option is called a shadow shield: its protection depends on casting a shadow rather than sitting directly on the patient or on the table. Other shields are placed differently: a shield in contact with the patient rests directly on the skin and blocks the beam at the surface, a floor shield sits on the floor and can be slid into place, and a table shield attaches to or sits on the imaging table. These configurations protect tissue in ways that don’t rely on casting a shadow over the patient, which is why they’re not the best description for shields suspended above that cast a shadow.

The concept here is shielding that protects tissues without blocking the area you want to image by using the shadow created by a shield placed above the patient. A shield suspended above the area of interest works by intercepting part of the beam so that its edge projects a shadow onto the patient’s skin. This shadow covers radiosensitive tissues outside the region being imaged (for example, the gonads during pelvic imaging) while the area of interest remains exposed for imaging. That is why this option is called a shadow shield: its protection depends on casting a shadow rather than sitting directly on the patient or on the table.

Other shields are placed differently: a shield in contact with the patient rests directly on the skin and blocks the beam at the surface, a floor shield sits on the floor and can be slid into place, and a table shield attaches to or sits on the imaging table. These configurations protect tissue in ways that don’t rely on casting a shadow over the patient, which is why they’re not the best description for shields suspended above that cast a shadow.