Question

What are the recommended thicknesses in millimeters of lead shielding for different kV ranges: _____ mm Pb for 100 kV or less, _____ mm Pb for 100-150 kV, _____ mm Pb for 150 kV or greater?

a) 0.5; 1.0; 1.5
b) 1.0; 1.5; 2.0
c) 0.25; 0.5; 0.75
d) 0.75; 1.25; 1.75

Answer 1

The required thickness of lead shielding for gamma ray protection depends on the energy of the rays. However, no definitive answer from the provided references is found, and standard recommendations generally range from 0.25 mm Pb for under 100 kV to 2.0 mm Pb for over 150 kV.

Step-by-step explanation:

The thickness of lead shielding required to protect against gamma rays depends on the energy of the rays, which is related to the kilovoltage (kV) peak of the X-ray machine. The correct answer to the question, 'What are the recommended thicknesses in millimeters of lead shielding for different kV ranges?' is not explicitly provided in the given reference materials. However, the standard recommendations are generally as follows:

• 0.25-0.5 mm Pb for 75-100 kV or less,
• 0.5-1.0 mm Pb for 100-150 kV,
• 1.5-2.0 mm Pb for 150 kV or greater.

These thicknesses can vary depending on specific regulations and use-case scenarios.