Randi Drees - Contributor Profile


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 PhD in cardiovascular imaging with the University of Gent, Belgium in 2015. She is a member at large of the board of the ECVDI and member of the radiation oncology education and credentials committee establishing an add-on Training program in Radiation Oncology for Diplomates of the ECVDI and ECVIM colleges and the past president of the CT/MRI society for the ACVR.

Published Papers

  • Coeditor for joint virtual issue on recent advances in veterinary cardiac imaging; BA Scansen, R Drees - Journal of Veterinary Internal Medicine/Journal of Veterinary Radiology and Ultrasound, 2020
  • 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), 887-892
  • 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
  • Hoey S, Biedrzycki A, Livesey M, Drees R Radiographic anatomy of juvenile bovine limbs Vet Rec. 2016 Nov 26;179(21):546
  • Barnes Heller H, Steinberg H, Drees R, Petersen S What is your neurological diagnosis? JAVMA July 1, 2016, Vol. 249, No. 1, Pages 55-57 Drees R Abdominal imaging: which modality to use? Irish Veterinary Journal, April 2016
  • Snyder CJ, Soukup JW Drees R, Tabone TJ Caudal Mandibular Bone Height and Buccal Cortical Bone Thickness Measured by Computed Tomography in Healthy Dogs Vet Surg. 2016 Jan;45(1):21-9
  • Fenn J, Drees R, Volk HA, Decker S Inter- and Intraobserver agreement for diagnosing presumptive ischemic myelopathy and acute non-compressive nucleus pulposus extrusion in dogs using magnetic resonance imaging Vet Radiol Ultrasound. 2016 Jan;57(1):33-40
  • Siak MK, Paul A, Drees R, Arthur I, Burrows AK, Tebb AJ, Malik R. Otogenic meningoencephalomyelitis due to Cryptococcus gattii (VGII) infection in a cat from Western Australia. JFMS Open Rep. 2015 Jun 1
  • Drees R, Johnson RA, Stepien RL, Munoz Del Rio A, Saunders JH, François CJ. Quantitative planar and volumetric cardiac measurements using 64 MDCT and 3T MRI vs standard 2D and M-Mode echocardiography: Does anesthetic protocol matter? Vet Radiol Ultrasound. 2015 Nov;56(6):638-57
  • Soukup JW, Drees R, Koenig LJ, Snyder CJ, Hetzel S, Miles CR, Schwarz T. Comparison of the Diagnostic Image Quality of the Canine Maxillary Dentoalveolar Structures Obtained by Cone Beam Computed Tomography and 64-Multidetector Row Computed Tomography J Vet Dent. 2015 Summer;32(2):80-6.
  • Oliveira CR, Henzler MA, Johnson RA, Drees, R Assessment of respiration-induced displacement of canine abdominal organs in dorsal and ventral recumbency using multislice computed tomography Vet Radiol Ultrasound. 2015 Mar-Apr;56(2):133-4
  • Drees R, Johnson R, Francois C, Saunders J Effects of two different anesthetic protocols on cardiac flow measured by two-dimensional phase contrast MRI Vet Radiol Ultrasound. 2015 Mar-Apr;56(2):168-75
  • Jacob SI, Drees R, Pinkerton ME, Bentley EM, Peek SF Cavernous Sinus Syndrome in a Holstein Bull (2013) J Veterinary Opthalmology 2015 Mar 18(2);164-7
  • Drees R, Johnson R, Francois C, Saunders J Effects of two different anesthetic protocols on 64-MDCT coronary angiography in dogs Vet Radiol Ultrasound. 2015 Jan-Feb;56(1):46-54
  • Hill M, Scudder J, Glanemann B, Drees R Hypertrophic osteodystrophy in a dogs imaged with CT Vet Rec Case Rep 2015;3:e000155
  • Nevitt BN, Langan JN, Adkesson MJ, Mitchell MA, Henzler M, Drees R Comparison of air sac volume, lung volume and lung densities determined by use of computed tomography in conscious and anesthetized Humboldt penguins (Spheniscus humboldti) positioned in ventral, dorsal and right lateral recumbency Am J Vet Res. 2014 Aug;75(8):739-45
  • Drees R Radiographic diagnosis of aggressive bone disease Equine Veterinary Education, 26(8), 420-421, 08/2014
  • Budgeon C, Mans C, Stein J, Drees R, Robat C, Pinkerton M, Tamara Chamberlin T, McAnulty JF, Imai DM Malignant trichoepithelioma of the ear canal in a pet rabbit (Oryctolagus cuniculus) J Am Vet Med Assoc 2014 Jul 15;245(2):227-31 (20/20/20)
  • Drees R, Francois C, Saunders J Invited Review: Computed tomographic Angiography (CTA) of the thoracic cardiovascular system in companion animals (2013) Vet Radiol Ultrasound. 2014 May-Jun;55(3):229-40 (90/90/90)
  • Darrow BG, Mans C, Drees R, Schwarz T, Pinkertion ME, Sladky KK Pulmonary blastomycosis in a domestic ferret (mustela putorius furo) Journal of Exotic Pet Medicine, 2014 Vol. 23, Issue 2, p158–164 (20/20/30)
  • 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 (20/20/40)
  • 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) Vet Pathol. 2014 May;51(3):612-8
  • Bell L, Johnson K, Fain S, Wentland D, Drees R, Johnson R, Baumann G, Francois C, Nagle SK (2013) Simultaneous MRI of Lung Structure and Perfusion in a single Breathhold J Magn Reson Imaging. 2013 Dec 20 (50/50/25)
  • 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 prairie 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-dultidetector 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 (75/75/75)
  • 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) Elodontoma 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) Evaluation of different computed tomography techniques and myelography for the diagnosis of acute canine myelopathy. 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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