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Photo: Allison L Zwingenberger

Allison L Zwingenberger- DVM, MAS
Associate Professor
Surgical & Radiological Sciences

1325 Tupper Hall
Davis, CA 95616

+1 530 752 6638


Research Focus

Veterinary Radiology:

Vascular imaging, molecular imaging, exotic animal imaging

Specialty Focus

Diagnostic Imaging


1995 DVM Veterinary Medicine, Ontario Veterinary College, University of Guelph, Guelph, Canada
2004 Residency , University of Pennsylvania,
2008 MAS , University of California, Davis,

Honors and Awards

2012 Top 5 article award - Journal of Veterinary Internal Medicine 2010-2011 - Zwingenberger AL, Marks SL, Baker TW, Moore PF. Ultrasonographic evaluation of the muscularis propria in cats with diffuse small intestinal lymphoma or inflammatory bowel disease. J Vet Internal Med, 24(2): 289-92.
2011 University of California Academic Senate Research Travel Award
2006 Mentored Clinical Research Training Program (K30)
2002 ECVDI Resident's prize for best scientific presentation
2002 Travel scholarship of the European Association of Veterinary Diagnostic Imaging


Diplomate American College of Veterinary Radiology
Diplomate European College of Veterinary Diagnostic Imaging

Active Research Grants

Co-Investigator, Multi-functional Nanocarrier against Canine Lymphoma, Kit Lam (Principal Investigator), National Institute of Biomedical Imaging and Bioengineering

Collaborator, Tumor radiosensitization using a nitric-oxide-neutral, tunable oxygen-binding protein technology, Omniox, Inc., Ajit S Shah (Principal Investigator), National Cancer Institute

Co-Investigator, Nasolacrimal Stenting forTreatment of Obstruction, W. Culp (Principal Investigator), CCAH

Principal Investigator, Ultrasonographic Anatomy of the Bearded Dragon (Pogona vitticeps), (Principal Investigator), CCAH

Co-Principal Investigator, CT Pneumocolonography in dogs with signs of large bowel disease, Michele Steffey (Principal Investigator), Center for Companion Animal Health

Most Recent 10 Publications

  • Link Icon 2014 Rodrigues Froes, T, Zwingenberger, AL, Sato, A, Garcia, DAA, de Souza, AC, de Souza Lemos, R, Mai, W. Interobserver agreement in interpretation of radiographic pulmonary changes in dogs in relation to radiology training. Semina Ciências Agrárias,
  • Link Icon 2014 Grosset C, Sanchesz-Migallon Guzman D, Keating MK, Gaffney PM, Lowenstine L, Zwingenberger AL, Young AC, Vernau KM, Sokoloff AM, Hawkins MG Central vestibular disease in a blue and gold macaw (Ara ararauna) with cerebral infarction and hemorrhage Journal of Avian Medicine and Surgery,
  • Link Icon 2014 Barrett L, Pollard, R., Zwingenberger, A., Zierenberg-Ripoll, A., Skorupski, K. Radiographic Characterization Of Primary Lung Tumors In 74 Dogs Veterinary Radiology & Ultrasound,
  • Link Icon 2014 Zwingenberger AL, Daniel, L., Steffey, M.A., Mayhew, P.D., Mayhew, K., Culp, W.T.N., Hunt, G.B. Correlation between liver volume, portal vascular anatomy and hepatic perfusion in dogs with congenital portosystemic shunt before and after placement of ameroid constrictors Veterinary Surgery,
  • Link Icon 2014 Hunt GB, Luff, J. Daniel, L., Zwingenberger, A.L. Does hepatic steatosis have an impact on the hepatic response following attenuation of congenital portosystemic shunts? A prospective study of 20 dogs. Veterinary Surgery,
  • Link Icon 2014 Hunt GB, Culp WC, Mayhew K, Mayhew P, Steffey MA, Zwingenberger A Evaluation of in vivo behavior of ameroid ring constrictors in dogs with congenital portosystemic shunts using computed tomography Veterinary Surgery,
  • Link Icon 2014 Ryan CT, Glass EN, Seiler G, Zwingenberger AL, Mai W Magnetic Resonance Imaging Findings Associated with Lateral Cerebral Ventriculomegaly in English Bulldogs Veterinary Radiology & Ultrasound,
  • Link Icon 2014 Mendoza P, d'Anjou M-A, Carmel ÉN, Fournier É, Mai W, Alexander K, Winter MD, Zwingenberger AL, Thrall DE, Theoret C Validation of a novel technique for creating simulated radiographs using computed tomography datasets Veterinary Radiology & Ultrasound. doi: 10.1111/vru.12117,
  • Link Icon 2014 Grosset C, Daniaux L, Guzman D S-M, Weber E S, Zwingenberger A, Paul-Murphy J Radiographic anatomy and barium sulfate contrast transist time of the gastrointestinal tract of bearded dragons (Pogona vitticeps) Veterinary Radiology & Ultrasound doi: 10.1111/vru.12128,
  • Link Icon 2014 Carr A, Weber EPS, Murphy CJ, Zwingenberger A Computed Tomographic and Cross-Sectional Anatomy of the Normal Pacu Colossoma macropomum tambaqui Journal of Zoo and Wildlife Medicine,

Most Recent 5 Book Chapters

2011 Kinns J, Malinowski R, McEvoy F, Schwarz T, Zwingenberger A: Special software applications, Schwarz T and Saunders J, (ed), Veterinary Computed Tomography. 67-74.

2009 Zwingenberger A, Silverman S: Rodents: Diagnostic imaging, Emma Keeble, Anna Meredith, (ed), BSAVA Manual of Rodents and Ferrets. .

2008 Zwingenberger A, Wisner E: Neck, D Penninck and M-A d'Anjou, (ed), Atlas of Small Animal Ultrasonography, Ames IA. 91-117.

2008 Mai W, O'Brien R, Scrivani P, Porat-Mosenco Y, Tobin E, Seiler G, McConnell F, Schwarz T, Zwingenberger A: The lung parenchyma, T. Schwarz and V Johnson, (ed), The BSAVA Manual of Thoracic Imaging. .