RE: Calculating Effective dose from Finger dose readings

["Stanford Dosimetry" <stanford@stanforddosimetry.com>]

Steve,

The whole body badge is your best estimate of the effective whole body dose.

Finger dosimeters are measuring extremity dose only, and a higher result on

the finger dosimeter doesn't necessarily mean the effective whole body dose

was underreported. It depends on the field.  If you suspect a significant

gradient in your whole body dose (upper arm compared to torso for example)

then you can check that by using a pair of dosimeters: one just above the

elbow and one at the normal position of the whole body dosimeter. There is

an ANSI standard that can be employed to help you decide if the results

warrant multiple whole body dosimeters (HPS N13.41 1997). It also presents a

method for evaluating the final effective dose equivalent from the multiple

results. 

 

Hope this helps,

Neill Stanford, CHP 

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Stanford Dosimetry LLC

Anacortes, WA 

 <http://www.stanforddosimetry.com/> www.stanforddosimetry.com

 <mailto:stanford@stanforddosimetry.com> stanford@stanforddosimetry.com

360 293 9334 (voice/fax) 

360 770 7778 (cell)                      

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  _____  



From: owner-radsafe@list.vanderbilt.edu

[mailto:owner-radsafe@list.vanderbilt.edu] On Behalf Of Crossley, Steven

Sent: Wednesday, November 24, 2004 11:19 PM

To: radsafe@list.vanderbilt.edu

Subject: Calculating Effective dose from Finger dose readings







Hello all, 



I am seeking some advice on calculating effective whole body doses when I

have dose levels from both finger dosimeters and from a badge worn on the

body.  Is there a standard method for this?



All help appreciated. 



Best Regards 



Steve Crossley 

Scientific Officer 

Radiation Health, 

Western Australia 

steven.crossley@health.wa.gov.au