Cerrobend is how much less dense than lead?

Cerrobend is an alloy often used in radiation therapy for its low melting point and favorable treatment characteristics. In terms of density, Cerrobend is approximately 15% to 20% less dense than lead. This reduced density is significant because it allows for easier handling and shaping of the material when creating custom blocks and other radiation shielding applications in dosimetry.

Lead is a common choice for shielding due to its high density and effectiveness in attenuating radiation, but the lighter weight of Cerrobend makes it a preferred alternative in many cases, particularly when it needs to be machined or manipulated for specific treatment setups. The percentage difference in density not only affects the physical properties of the materials but also has implications in calculating the necessary thickness of shielding required to achieve the desired level of attenuation.

In dosimetry, understanding these differences in density is crucial for accurate planning and delivery of radiation treatment, ensuring maximal therapeutic effect while minimizing exposure to surrounding healthy tissues.