RE: Dosimeters and airport security - Relative Response of dosimeters

["Sandy Perle" <sandyfl@EARTHLINK.NET>]

Rob is quite accurate in his assessment. Depending on the standard 

followed, country processed in, the Ck (dose conversion factors) are 

all different. In the past, NVLAP used ANSI N13.11-1993 and Handbook 

150 to assess dose. NVLAP now uses ANSI N13.11-2001. DOELAP used EH-

0026 and EH-0027 to assess dose. The dose calculated using the same 

badge in the same area at the same time would result in a different 

dose assessment and official dose record. In the USA we calculate 

DDE, SDE and LDE. In many of the European countries, they calculate 

Hp(d) and Hp(s). They don't calculate lens dose equivalent.



Algorithms are unique to each processor and the method of processing 

is always different. QA/QC programs are different (I conduct NVLAP on-

site assessments) and have never seen any consistency.



In conclusion, dose is not dose. Double badging and you have a real 

mess on your hands!

-------------------------------------------------

Sandy Perle

Director, Technical

ICN Worldwide Dosimetry Service

ICN Plaza, 3300 Hyland Avenue

Costa Mesa, CA 92626



Tel:(714) 545-0100 / (800) 548-5100  Extension 2306

Fax:(714) 668-3149



E-Mail: sandyfl@earthlink.net

E-Mail: sperle@icnpharm.com



Personal Website: http://sandy-travels.com/

ICN Worldwide Dosimetry Website: http://www.dosimetry.com/



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