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Re: Personnel Monitoring Data Needed
The methodology noted in the post,
>is it representative of the EDE? I am not familiar with the
>methodology used to arrive at the equation, which is:
>EDE =(1.5*chest badge) + (0.04*collar badge).
is found on page 34 in NCRP Report 122, "Use of Personal Monitors to
Estimate Effective Dose Equivalent and Effective Dose to Workers for
External Exposure to Low-LET Radiation" Dec. 27. 1995. It is an
empirically derived formula. Use of this formula is noted as unique to
workers receiving radiation from medical x-rays, particularly
fluoroscopy. It is a modification of the work of Faulkner, K. and
Harris, R.M. (1988) "Estimation of effective dose equivalent to staff in
diagnostic radiology" Phys. Med. Biol. 33, 83-91 and Webster, E.W.
(1989) "EDE for exposure with protective aprons" Health Phys. 56,
568-569.
The above is the personal views of the author
Ed Tupin
RSO, Center for Devices and Radiological Health
EAT@fdadr.cdrh.fda.gov
(301) 827-1230
Fax: (301) 594-4760