Re: Strontium eye applicator

["J. Andrew Tompkins" <jatalbq@mindspring.com>]

Carol,
Thank you for the detailed explanation of how this device is used to treat
disease.  It is very helpful for all of us to remember exactly why the
nuclear genie appeared so promising at the beginning of this century.  When
used appropriately it can help define the problem and or provide a cure.

Merry Christmas 

Andy Tompkins
Woodstock, GA

jatalbq@mindspring.com

At 10:10 AM 12/23/99 -0600, you wrote:
>At 08:21 AM 12/23/99 -0600, you wrote:
>>At 10:18 PM 12/22/1999 -0600, mark sasser wrote:
>>>
>>>why do you want to use it on a poor animal! If you
>>>want know the Effects Use your self. do you ask the
>>>animal if he wants to be used on Him? I am sorry... I
>>>feel for you!
>>
>>>--- marvinturkanis@alum.mit.edu wrote:
>>>> Looking for a strontium-90 applicator with an
>>>> intensity for 2500 -3500 cGy for veterinary ocular
>>>> use.
>>********************************************
>>December 23, 1999
>>Davis, CA
>>
>>I believe that the applicator is used for treatment of serious pathological
>>conditions such as melanoma of the eye. In people melanoma of the eye is
>>routinely treated with high energy proton beams. This beats surgical
>>removal of the affected eye.
>>
>>Otto
>>
>>
>>		*****************************************************
>>		Prof. Otto G. Raabe, Ph.D., CHP
>>              Institute of Toxicology & Environmental Health (ITEH)
>>		   (Street address: Building 3792, Old Davis Road)
>>		University of California, Davis, CA 95616
>>		Phone: 530-752-7754  FAX: 530-758-6140
>>		E-mail ograabe@ucdavis.edu
>>              *****************************************************
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>
>
>
>Dear Radsafers:
>
>Sr-90 "eye" probes are used to stop the growth of pterygia, abnormal fleshy
>growths that spread over the eye which can obstruct vision.  These growths
>often occur in geographic areas where the eye is subject to excessive dust
>or foreign material.
>
>An existing pterygium is surgically removed, and the tissue which gave rise
>to the growth is "sterilized" with the radiation from the Sr-90 so that
>regrowth is averted.  Sr-90 eye probes are not used to treat eye cancer.  
>
>Some physicians have used the eye probes to treat superficial skin cancers,
>and claim good results.  However, NRC made it illegal to do so if one has an
>NRC license, claiming that the ACMUI stated that it was not safe or
>effective.  In fact, neither the ACMUI nor its Chairman was ever asked this
>question.  According to the FDA labeling of the device, it is appropriate to
>treat any superficial lesion;  however, NRC has refused to honor 21 CFR
>892.5650.  When NRC was repeatedly informed by me that nothing in the FDA
>device labeling precluded use for superficial skin cancers, NRC responded in
>its usual manner---it refused to answer the letters.  As I was a member of
>the ACMUI at the time, AND was Chair of FDA's Radiologic Devices Advisory
>Panel, one might think a response would have been appropriate.
>
>Ciao, Carol
><csmarcus@ucla.edu>
>
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