Posted 7-1-2002

New Ultrasound Test For
Congenital Portosystemic Shunts

For healthy Yorkies that are 6-12 months of age in and around the Madison, WI area

Dr. Robert T. O'Brien and colleagues at the University of Wisconsin School of Veterinary Medicine are evaluating a new ultrasound test for congenital portosystemic shunts. These veterinarians hope that the new test will be able to replace radioactive scintigraphy and the more invasive portogram ("blood vessel dye study"). Dr. O'Brien, a board certified radiologist, is particularly interested in evaluating healthy Yorkies that are 6-12 months of age to serve as a control population ("normals"). The test will require placement of an intravenous catheter and a 15-25 minute ultrasound. There is no risk to the procedure and the dogs are able to go home immediately after the test. The investigators will pay for the ultrasound and bile acids (if these are needed); there should be no cost to participants for the test.

If you are interested in becoming involved with this study, please contact Dr. O'Brien at

Please pass this information along to other Yorkie breeders and owners in and around the Madison, WI area that might be able to help.

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