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CONTAMINATION                                                                   

Technetium99m tainted urine can cause a variety of artifacts.  Most notably found in the distal limbs as the horse wanders in the stall and steps in the contaminated shavings or straw. Splashing and dribbling of urine also produce surface contamination.   As always, two views document the incident.  Preventative measures such as the application of easy boots and tying up the tail of fillies helps prevent the problem.   In the event of contamination around the area of  interest, to the point of interference (i.e. consolidation of counts in the area of contamination)   shielding and/or scrubbing and rinsing the area dramatically improves the image.

                                                            

EXAMPLE 1

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EXAMPLE 2

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EXAMPLE 3

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EXAMPLE 4

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EXAMPLE 5

Note the disparity in the images of the shielded vs. the not shielded images.

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Copyright 2001 University of Pennsylvania School of Veterinary Medicine
Faculty Sponsor: Dr. Michael W. Ross
Technologist: Vivian S. Stacy CNMT
Comments and suggestions to vstacy@vet.upenn.edu