Equine Radiography

[alstonchris@netscape.net]

>Date:    Tue, 15 Oct 2002 12:23:22 +0930

>From:    "Crawford, Leonie (EPA)" <Leonie.Crawford@DHS.SA.GOV.AU>

>Subject: EQUINE RADIOGRAPHY

>

>The Aushorse and Thoroughbred breeders association have recently announced

>an X-ray policy for yearling sales to be held next year.  The policy is

>simular to one developed by Keeneland ( USA,s biggest sales company) over

>the last 5 years. 34 X-rays are requires for each yearling and must be taken

>within 42 days of the commencement of sale.  Horses sold into Hong Kong have

>42 films taken.  Some sites are having their weanlings X-rayed to detect

>early problems that can be remedied prior to being sold as yearlings.

>Approximately 22 films are taken.  All of the above does not include any

>repeats required.  Recent research into how the radiography is conducted has

>shown that: 1.All x-ray cassettes are being hand held, 2.Veterinary surgeons

>are hand holding the portable x-ray units to do the radiography.  Having

>seen the procedure in part, I can understand why they employ these

>techniques. With the new X-ray screening protocol coming into force in

>Australia, the high  number of films being taken by a small pool of persons

>and the radiation doses of persons involved in the procedure will receive

>should be of concern.  Does anybody have any information or knows of surveys

>carried out to evaluate the radiation doses received by veterinary surgeons

>in the USA involved in these screening procedures for yearlings?  One local

>veterinary clinic here will probably do 150 to 200 horses.

>

>

>Leonie Crawford

>Specialist Radiation Protection Officer

>Radiation Protection Branch

>Tel: 81300715

>Fax: 81300777

>Email: Leonie.Crawford@saugov.sa.gov.au

>

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