Radiation Exposure Limits for Research Subjects

[KASTIN.STEVEN@forum.va.gov]

Hi folks:
 
We are currently working on a research protocol involving multiple brain
SPECT studies (with HMPAO) as well as PET scans (F-18 FDG).  The question
is: What, if any, are the exposure limits applied to research volunteers?
Are they considered patients?  Radiation workers?  Members of the general
public?
 
It has been suggested to us to use the NCRP guidelines for radiation
workers.  Is anyone doing this?  If so, how closely do you adhere to those
guidelines?
 
Thanks in advance for your help.
 
Steve Kastin, MD
kastin.steven@forum.va.gov