Weighting Factor for Hot Particle Skin Doses

[Carol Marcus <csmarcus@ucla.edu>]

Jan. 24, 2003



Dear Radsafers:



Many thanks to those who have contributed to this discussion.  In reading 

the answers, I realized that I have another question.



According to the Statements of Consideration for Part 20, "External doses 

to the head, trunk (including male gonads), arms above the elbow, or legs 

above the knee are to be treated as whole-body doses.  For the purpose of 

weighting the external whole-body dose (for adding it to the internal 

dose), a single weighting factor, wsubT = 1.0, has been specified."



As the permissible limit for whole body radiation absorbed dose is 5 rem, I 

assumed that if the skin of the head was irradiated, the 5 rem limit would 

apply, not the 50 rem limit.  Or, is it 50 rem shallow dose and 5 rem deep 

dose? Or something else?



Ciao, Carol



Carol S. Marcus, Ph.D., M.D.

<csmarcus@ucla.edu>



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