Re[2]: Patient Dose Rates

[coogen_michael@hq2ccgw.hq.dla.mil]

You might want to get in contact with a Medical physicist at a hospital that has
nuclear medicine capabilities.  Usually external dose rates from patient 
receiving nuclear medicine studies are measured directly with radiation survey 
meters.  I know from experience with I-131, depending upon the dose, that the 
release criteria from the hospital was measuring the dose rate at 1 meter.  
Radiation surveys were performed folliwing initial dosing and allowing 1 hour 
for distribution within the body.  Example 150mCi dose of 1-131 would yield a 
dose rate at 1 meter of approximately 100mRem on the first day; 40 mRem at 1 
meter on the second day; and less than 6 mRem on the third day.  mike sends

______________________________ Reply Separator _________________________________
Subject: Re: Patient Dose Rates
Author:  radsafe@romulus.ehs.uiuc.edu at hq2ccgw
Date:    7/7/95 12:56 PM


I would like to know the answers too.  Please post!

George Xu, RSO
Rensselear Polytechnic Institute

>     I have been asked to calculate the external (gamma) dose rate from 
>     patients following a wide variety of nuclear medicine procedures. 
>     While there is a large amount of data, and methodology, to calculate 
>     organ and/or patient doses, I cannot find much data about the dose 
>     rate from them that others might be exposed to. (There is some limited 
>     data in NCRP 37, but it considers everything as a point source and 
>     neglects attenuation within the patient's body.) 
>     
>     Has anyone done actual dose rate measurements on patients after 
>     nuclear medicine procedures? Is this data readily available anywhere? 
>     
>     
>     
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