[ RadSafe ] In utero dose

Flanigan, Floyd Floyd.Flanigan at nmcco.com
Tue Apr 18 11:26:00 CDT 2006


I realize this. But taking the conservative approach is always
advisable. Hence ALARA. The lack of set limits is an issue which should
be addressed. We cannot continue to let the medical world self-police.
They have proven time and time again that they are prone to leaning to
one extreme or the other. The limit should mirror occupational dose
except, of course in the case of limits hindering treatment. All of this
falls into the principals of ALARA in one way or another.

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 North, David
Sent: Tuesday, April 18, 2006 10:25 AM
To: radsafe at radlab.nl
Subject: RE: [ RadSafe ] In utero dose

That applies only to occupational doses. There are absolutely no dose
limits
whatsoever for patients.

David L. North, Sc.M., DABR
Associate Physicist
Medical Physics
Main Bldg. Rm 317
Rhode Island Hospital
593 Eddy St.
Providence, RI 02903
(401)444-5961
fax: (401)444-4446
dnorth at lifespan.org



> ----------
> From: 	radsafe-bounces at radlab.nl on behalf of Flanigan, Floyd
> Sent: 	Tuesday, April 18, 2006 10:44
> To: 	Keith Welch; radsafe at radlab.nl
> Subject: 	RE: [ RadSafe ] In utero dose
> 
> 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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