title: Helical computed tomographic angiography of canine portosystemic shunts.
abstract: Helical computed tomographic (CT) angiography was performed in 16 dogs with known or suspected portosystemic shunts. Fifteen portosystemic shunts were detected including five single intrahepatic shunts, five single extrahepatic shunts, and five multiple extrahepatic shunts. One dog had a normal CT examination. All diagnoses were confirmed by one or several alternate methods including ultrasound, surgery, necropsy, angiography, and liver biopsy. CT detected the origin of 13 of 15 portosystemic shunts and insertion of 13 of 15 shunts. Limitations included inability to resolve two vessels originating very close to each other, and identification of vessels that traveled parallel to the axial image plane. CT angiography is a promising, minimally invasive method of diagnosing a variety of portosystemic shunts in dogs.
authors.affiliation: Department of Clinical Studies-Philadelphia, School of Veterinary Medicine, University of Pennsylvania, 3900 Delancey Street, Philadelphia, PA 19104-6010, USA. azwingen@vet.upenn.edu
authors.forename: Allison L
authors.initials: AL
authors.lastname: Zwingenberger
authors.forename: Tobias
authors.initials: T
authors.lastname: Schwarz
authors.forename: H Mark
authors.initials: HM
authors.lastname: Saunders
mesh_terms: D000792:Angiography / Q000662:veterinary*; D000818:Animals; D004283:Dog Diseases / Q000000981:diagnostic imaging* / Q000453:epidemiology; D004285:Dogs; D005260:Female; D006975:Hypertension, Portal / Q000000981:diagnostic imaging / Q000662:veterinary*; D008297:Male; D015143:Philadelphia / Q000453:epidemiology; D011168:Portal System / Q000002:abnormalities*; D011237:Predictive Value of Tests; D014057:Tomography, X-Ray Computed / Q000662:veterinary*