RE: HEAST risk estimates

["Joe Alvarez" <jalvarez@auxier.com>]

You got most of it right.  The risk of contracting cancer or morbidity. 
 See Biran Kelly's message.  1.42 E-10 per pCi means the risk to a single 
person or one person out of 1.9 e+11.  It will obviously take more than a 
pCi to world population.  It appears stange when given as 3.84 per GBq, but 
is more understandable as 3.84 E-9 per Bq.

Joe Alvarez

Joe Alvarez
Auxier & Associates, Inc.
10317 Technology Dr., Suite 1
Knoxville, TN 37932
jalvarez@auxier.com
Tel: 423-675-3669
FAX: 423-675-3677

-----Original Message-----
From:	Anthony Barber [SMTP:a.barber@qut.edu.au]
Sent:	Thursday, May 14, 1998 2:49 AM
To:	Multiple recipients of list
Subject:	HEAST risk estimates

Can anyone explain what the qualifier (denominator) is for the risk measure
used in the HEAST radionuclide carcinogenicity table?

Example - risk of contracting cancer from ingestion of Ac89 is given as
1.42E-10 risk per pCi or 3.84 risks for 1GBq ingested.
What is 3.84 risks? Is it 3.84%? or is it 3.84 cancers per million people
exposed or maybe it is 3.84 cancers per person exposed? (ha, ha)

I have read all the documents at the HEAST web page with no joy. Although
it is highly likely that I am simply displaying my ignorance or inablity to
comprehend documents.

All explanations gratefully accepted.

Regards


Anthony Barber
RSO - Queensland University of Technology
ph  61 7 3864 3566
fax 61 7 3864 3993
a.barber@qut.edu.au
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Why not?
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