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Re: Mammography Doses

To: radsafe@romulus.ehs.uiuc.edu
Subject: Re: Mammography Doses
From: tdc@ehssun.lbl.gov (Ted M. de Castro)
Date: Mon, 07 Nov 1994 10:06:17
In-Reply-To: <5A0A4E9542E@brc1.tdh.texas.gov>

>>A technologist would not be able to inform the patient as to the
>>actual dose recieved without taking measurements during the
>>procedure.  As this would interfere with the procedure, it is not
>>done.

I find myself generally in disagreement with what officialdom considers a 
physicists' survey of a mammo machine - to much non-physics!!  Thus I no 
longer do them .... BUT if a proper physics study is done then the machine 
is characterized and iff the machine is one of several that present a time 
or mAs readout for a photo-timed procedure - or the known techniques for a 
manual procedure - THEN an entrance exposure CAN be known (and doses 
calculated) WITHOUT interference with the procedure!

It is NOT necessary to make a RAD measurement during the exposure.

References:
- Mammography Doses
  - From: "Wesley M. Dunn" <WDUNN@brc1.tdh.texas.gov>

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