Re: Hologic X-ray Bone Densitometer

[Richard Smart <R.Smart@unsw.edu.au>]

Shielding was not a problem with the older pencil beam machines.  But, you
should be aware that the newer fan beam systems do give a measureable dose
at some distance from the patient.  I do not have any data for the Hologic
machine.  We use the Lunar EXPERT and Lunar provide isodose distributions
(which I have verified) for use in estimating the dose to the operator.

Richard


At 07:20 P 17.11.98 -0600, you wrote:
>I wouldn't worry too much about facility design: you need a pancake
>chamber to pick up any readings at all from a bone densitometer at only
>3 or 4 feet.
> 
>    _____________________________________________________________
>        Gary Isenhower                  
>        garyi@bcm.tmc.edu
>
>"One of the illusions of life is that the present
>hour is not the critical decisive hour. Write it
>on you heart that every day is the best day of
>the year."
>                                - R. W. Emerson -
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>
Richard Smart PhD
Department of Nuclear Medicine
St. George Hospital
Kogarah, NSW 2217
Australia
Tel:61 2 9350 3112
Fax:61 2 9350 3991
Email:R.Smart@unsw.edu.au
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information can be accessed at http://www.ehs.uiuc.edu/~rad/radsafe.html