Department: Clinical Science and Services

Campus: Hawkshead

Clinical Groups: Small Animal Diagnostic Imaging

Randi is an associate professor in Diagnostic Imaging and head of the QMHA Diagnostic Imaging Section. She is particularly interested in CT and MRI focusing on cardiovascular and oncologic applications as well as image-guided radiation therapy.

Randi graduated from the Freie Universität Berlin, Germany in 2001. She pursued her doctoral thesis funded by a stipend through the Sonnenfeld-Stiftung Berlin in a cooperation between the Radiology Department of the Humboldt Universität Berlin and the Anatomy Department of the Veterinary School of the Freie Universität, Berlin.

Randi then spent time in private practice before pursuing her Diagnostic Imaging residency at the University of Wisconsin-Madison, USA. She became board certified with the European College of Veterinary Diagnostic Imaging and American College of Veterinary Radiology in 2008. Randi then pursued an alternative training program in Veterinary Radiation Oncology at the University of Wisconsin-Madison, USA, and became board certified with the American College of Veterinary Radiology (Radiation Oncology) in 2012.

She held a clinical assistant professorship and was section head of the diagnostic imaging section at the School of Veterinary Medicine at the University of Wisconsin-Madison, USA before relocating to the RVC.

Randi has completed her Ph.D. in cardiovascular imaging with the University of Gent, Belgium in 2015. She is a member at large of the board of the ECVDI and ECVDI chair of the radiation oncology education and credentials committee in Radiation Oncology, currently working towards establishing radiation oncology as a subspeciality within the ECVDI and ECVIM colleges. She has also served as the president of the CT/MRI Society for the ACVR from 2017-19. 

https://www.ncbi.nlm.nih.gov/pubmed/?term=randi+drees

Mark J Plested, Allison L Zwingenberger, Daniel J Brockman, Silke Hecht, Scott Secrest, William T N Culp, R Drees
Canine intrahepatic portosystemic shunt insertion into the systemic circulation is commonly through primary hepatic veins as assessed with CT angiography
Vet Radiol Ultrasound. 2020 Sep;61(5):519-530. doi: 10.1111/vru.12892. Epub 2020 Jul 14.


Hornby N, Drees R, Wells D, Piercy R
MRI evaluation of skeletal muscle in the deltaE50-MD dog model of Duchenne muscular dystrophy
Neuromuscular Disorders, 2019, 29, S160


Martin S, Drees R, Szladovits B, Beltran E
Comparison of medical and/or surgical management of 23 cats with intracranial empyema or abscessation
Journal of feline medicine and surgery 2019, 21 (6), 566-574

Plested MJ, Drees R
Survey of surgical specialists’ content preferences in radiology reports for extrahepatic shunts
Veterinary Radiology & Ultrasound, 2019 60 (3), 316-322

Hughes JR, Szladowts B, Drees R
Abdominal CT evaluation of the liver and spleen for staging mast cell tumors in dogs yield nonspecific results
Veterinary Radiology & Ultrasound, 2019, 60 (3), 306-315

Johnson JG, Langan NJ, Chinnadurai SK, Drees R, Warneke M, Allender MC
Comparison of transcutaneous ultrasound and computed tomography evaluation of kidney size and evaluation of adrenal gland size using ultrasound in a colony of callimicos (callimico goeldii)
Journal of Zoo and Wildlife Medicine. Dec 2018, 49(4), 887-89

Specchi S, Rossi F, Weisse C, Morabito S, Petrovitch NP, Drees R, Thierry F, Ricciardi M, Penchome R, Armenise A, Pey P, Paek M, Panopoulos I, Nicoli S, Schwarz T
Canine and feline abdominal arterioportal communications can be classified based on branching patterns in computed tomographic angiography
Vet Radiol Ultrasound. 2018 Nov;59(6):687-696

Schwarz P, Meier V, A Soukup, Drees R, Besserer R, Beckmann K, Roos M, Roher-Bley C
Comparative evaluation of a novel, moderately hypofractionated radiation protocol in 56 dogs with symptomatic intracranial neoplasia
J Vet Intern Med. 2018 Nov;32(6):2013-2020

Wojick KB, Langan JN, Terio KA, Righton A, Drees R
Anatomy, histology and diagnostic imaging of the reproductive tract of the male aardvark (Orycteropus afer)
J Zoo Wildl Med. 2018 Sep;49(3), 648-655

Whittaker DE, Drees R, Beltran E.
MRI and clinical characteristics of suspected cerebrovascular accident in nine cats.
J Feline Med Surg. 2018 Aug;20(8):674-684

Kane L,  Langan J, Adkesson M, Chinnadurai S,  Nevitt B, Drees R
Treatment of mandibular osteomyelitis in two red-necked wallabies (Macropus rufogriseus) by means of intensive long-term parenteral drug administration and serial computed tomographic monitoring
J Am Vet Med Assoc 2017, 251, 9, 1070-1077

Coia ME, Hammond G, Chan D, Drees R, Walker D, Murtagh K, Stone J, Bexfield N, Reeve L, Helm J.
Retrospective evaluation of thoracic computed tomography findings in dogs naturally infected by Angiostrongylus vasorum.
Vet Radiol Ultrasound. 2017 Sep;58(5):524-534

Crawford A, Drees R, Beltran E
MRI and clinical resolution of a suspected intracranial toxoplasma granuloma with medical treatment in a domestic shorthair cat
Vet Rec Case Rep 2017; 5: e000480

Fitzgerald E, Lam R, Drees R.
Improving conspicuity of the canine gastrointestinal wall using dual phase contrast-enhanced computed tomography: a retrospective cross-sectional study
Vet Radiol Ultrasound 2017 Mar;58(2):151-16

Dirrig H, Lam R, Drees R
Use of Dual-Phase Contrast Computed Tomography For Evaluation Of The Normal Canine Male Genital Tract
J Small Anim Pract. 2016 Dec;57(12):679-689

Fenn J, Drees R, Volk HA, De Decker S.
Comparison of clinical signs and outcomes between dogs with presumptive ischemic myelopathy and dogs with acute noncompressive nucleus pulposus extrusion.
J Am Vet Med Assoc. 2016 Oct 1;249(7):767-75

Jones ID, Lamb CR, Drees R, Priestnall SL, Mantis P
Associations between dual-phase computed tomography features and histopathology diagnoses in 52 dogs with hepatic or splenic masses
Vet Radiol Ultrasound 2016, Mar;57(2):144-53

Drees R, François CJ, Saunders JH.
Invited review-computed tomographic angiography (CTA) of the thoracic cardiovascular system in companion animals.
Vet Radiol Ultrasound. 2014 May;55(3):229-40

Markovic LE, Kellihan HB, Roldán-Alzate A, Drees R, Bjorling DE, Francois CJ.
Advanced multimodality imaging of an anomalous vessel between the ascending aorta and main pulmonary artery in a dog.
J Vet Cardiol. 2014 Mar;16(1):59-65

Bell LC, Johnson KM, Fain SB, Wentland A, Drees R, Johnson RA, Bauman G, Francois CJ, Nagle SK.
Simultaneous MRI of lung structure and perfusion in a single breathhold.
J Magn Reson Imaging. 2013 Dec 20 Epub ahead of print

Peek A, Pinkerton M, Bentley E, Drees R
Cavernous Sinus Syndrome in a Holstein Bull (2013)
J Veterinary Opthalmology 2013 epub ahead of print

Imai DM, Miller JL, Leonard BC, Bach JF, Drees R, Steinberg H, Teixiera LBC (2013)
Visceral leiomyopathy associated with intestinal pseudo-obstruction in a Bengal cat (Felix catus x Prionailurus bengalensis)
J Veterinary Pathology epub ahead of print

Rossi F, Caleri E, Bacci B, Drees R, Groth A, Hammond G, Vignoli M, Schwarz T
CT features of basihyoid ectopic thyroid carcinoma in dogs (2013)
Vet Radiol Ultrasound. 2013 Nov-Dec; 54(6), 575-581

Mans C, Drees R, Sladky KK, Hatt JM, Kircher PR (2013)
Effects of body position and extension of the neck and extremities on lung volume measured via computed tomography in red-eared slider turtles (Trachemys scripta elegans).
J Am Vet Med Assoc. 2013 Oct 15;243(8):1190-6

Hoey S, Keller D, Chamberlin T, Pinkerton M, Waller K, Drees R (2013)
Pulmonary-tracheobronchial prolapse in a new Caledonian giant gecko (Rhadocodactylus Leachianus)
Vet Radiol Ultrasound. 2013 Nov-Dec; 54(6), 630-633

Hoey S, Drees R, Hetzel S (2012)
Evaluation of the gastrointestinal tract in dogs using computed tomography
Vet Radiol Ultrasound. 2013 Jan-Feb;54(1):25-30

Sumner JP, Hardie RJ, Henningson JN, Drees R, Markel MD, Bjorling D (2012)
Evaluation submucosally injected polyethylene glycol-based hydrogel and bovine cross–linked collagen in the canine urethra using cystoscopy, magnetic resonance imaging and histopathology (2012)
Journal of Veterinary Surgery, 41 (6):655-63

Rodriguez-Ramos Fernandez J, Thomas NJ, Dubielzig RR, Drees R (2012)
Osteosarcoma of the maxilla with concurrent osteoma in a southern sea otter (Enhydra lutris nereis)
Journal of Veterinary Comparative Pathology 147(2-3):391-6

Sim RS, Pinkerton ME, Naranjo C, Drees R, Rodriguez-Ramos Fernandez J, Sanchez-Migallon Guzman D (2011)
Hepatocellular carcinoma in a black-tailed praire dog (Cynomys ludivicans) Consulta Veterinary Journal, Special, 403-406

Sander W, Sanchez-Migallon Guzman D, Keller D, Danielson D, Rodriguez-Ramos Fernandez J, Drees R, Naranjo C, Webb JL. (2011) Surgical amputation of a forelimb osteosarcoma in a domestic ferret (Mustela putorius), Consulta Veterinary Journal, Special, 413-417

Drees R, Frydrychowicz AP, Reeder SB, Pinkerton ME, Johnson R
64 Slice Multi-detector Computed Tomographic Angiography of the Canine Coronary Arteries (2011)
Journal of Veterinary Radiology & Ultrasound 52 (5):507-515

Drees R, Frydrychowicz AP, Keuler N, Reeder SB, Johnson R Pulmonary Angiography with 64 slice multidetector computed tomography (MDCT) in dogs: Pulmonary arterial anatomy and sensitivity of artery visualization (2011)
Journal of Veterinary Radiology & Ultrasound 52 (4):362-367

Drees R, Perrier M, Vetter JR, Brounts S, Schwarz T Magnification Radiography in the horse to blur our superimposed structures.
Wien. Tierärztl. Mschr. - Vet. Med. Austria 98 (2011), 160 – 165

Rodriguez-Ramos Fernandez J, Pinkerton ME, Heisey, DM, Drees R, Schneider J, Stickney L, Hofmeister EK, Sanchez-Migallon Guzman (2010)
Elodontomas in captive red-backed voles (Myodes gapperi)
Journal of Zoo and Wildlife Medicine 41(3):555-561

Saam DE, Drees R, Gonzalez OD (2010)
What’s your diagnosis? Chondrosarcoma in a dog
Journal of the American Veterinary Medical Association 327(1):33-4

Dennison SE, Drees R, Rylander H, Pettigrew R, Milovancev M, Keuler NS, Schwarz T (2010)
Comparison of conventional myelography, survey-, intravenously and intrathecally contrast-enhanced computed tomography in dogs with suspected cervical and thoracolumbar spinal cord compression
Journal of Veterinary Radiology & Ultrasound 51:254-258

Rao D, Rylander H, Drees R, Schwarz T, Steinberg H (2010)
Granular cell tumor in a lumbar spinal nerve of a dog
Journal of Veterinary Diagnostic Investigation 22:4

Drees R, Forrest LJ, Chappell R (2009)
Comparison of computed tomography and magnetic resonance imaging for the evaluation of canine intranasal neoplasia
Journal of Small Animal Practice 50:1-7

Koch C, Drees R, Hartmann F, McGuirk S, Prichard MA (2009)
Nocardia arthriditis infection in the distal metaphysis of the metatarsal bone III and IV of a heifer
Journal of the American Veterinary Medical Association 234:669-673

Drees R, Dennison SE, Keuler NS, Schwarz T (2009)
Computed tomographic imaging protocol for the canine cervical and lumbar spine
Veterinary Radiology & Ultrasound 50:74-79

Drees R, Hünigen H, Wagner S, Schnorr J, Plendl J, Taupitz M (2008)
Peripheral washout phenomenon in and animal tumor model: comparison of dynamic magnetic resonance imaging using a small molecular contrast medium with histology
Veterinary and Comparative Oncology 6:151-161

Schnorr J, Wagner S, Abramjuk C, Drees R, Schink T, Schellenberger E, Pilgrim H, Hamm B, Taupitz M (2006)
Focal liver lesions: SPIO-, Gadolinium-, and Ferucarbotran-enhanced dynamic T1-weighted and delayed T2-weighted MR imaging in rabbits
Radiology 240:90-100

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