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I have
tested 0.25 mm Pb equivalent aprons with Cs-137 in my own lab and recorded 19%
attenuation. Most techs in fluoro rooms in hospitals do not wear 0.5 mm Pb
equiv. aprons. Furthermore in practice 0.25 mm Pb equivalent on a tech is
usually about 95% - 99% effective when measured against the readings on a collar
badge outside the apron on the same tech. (This is effective against
scatter) So I have to question the readings regarding Pb effectiveness on this
web site.
Bob Scott, RPO
Roger Williams Medical Center
Providence, RI
bscott@rwmc.org
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