[ RadSafe ] In utero dose

[John Jacobus]

Floyd,
The limits you refer to are those for a radiation
worker, not a patient.

--- "Flanigan, Floyd" <Floyd.Flanigan at nmcco.com>
wrote:

> There should be an HP on site at most hospitals. The
> general rule of
> thumb for In Utero Dose is 500 millirem for the term
> of the pregnancy,
> but of course all exposure should be kept ALARA.
> 10CFR20 has additional
> federal limits.
> 
> Floyd W. Flanigan B.S.Nuc.H.P.
> 
> -----Original Message-----
> From: radsafe-bounces at radlab.nl
> [mailto:radsafe-bounces at radlab.nl] On
> Behalf Of Keith Welch
> Sent: Tuesday, April 18, 2006 8:49 AM
> To: radsafe at radlab.nl
> Subject: [ RadSafe ] In utero dose
> 
> I have some questions for you medical experts.  I'm
> curious what 
> guidelines are used when there is a case requiring
> x-rays of a pregnant 
> female.  Let me give you a hypothetical case.  Let's
> say a woman is 
> injured in an auto accidedent, has some internal
> injuries and broken 
> bones.  She's 12 weeks pregnant.  To treat her
> injuries, she needs 
> surgery and a series of radiographs.  Are there
> generally accepted and 
> well known standards that physicians refer to in
> order to advise 
> patients and determine a course of treatment?  ARe
> there risk-based 
> guidelines in place and widely known to general
> surgeons and 
> practicioners?  How common is it for a surgeon to
> seek the advice of an 
> HP or MP to assess the risks of such procedures?  
> My impression of the 
> handling of "routine" x-rays is that if a woman is
> pregnant, x-rays are 
> always postponed, just to be conservative.  But in a
> case where there is
> 
> a pressing need to preserve health, how is the
> decision to conduct the 
> x-rays arrived at?  How are these risks weighed? 
> What is the typical 
> "standard of care"?  Is there an agreed dose at
> which the patient is 
> advised to terminate the pregnancy?
> 
> Thanks.
> Keith Welch
> 
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+++++++++++++++++++
"A scientist's aim in a discussion with his colleagues is not to persuade, but to clarify." 
Leo Szilard
-- John
John Jacobus, MS
Certified Health Physicist
e-mail:  crispy_bird at yahoo.com

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