Titles and Education

1. 2019-Present: Clinical Assistant Professor, Diagnostic Imaging, University of Wisconsin-Madison

2. 2016-Present: Assistant Dean for Clinical Affairs
3. 2013-Present: Clinical Assistant Professor, Diagnostic Imaging, University of Wisconsin-Madison
4. 2013-2016: Section Head, Diagnostic Imaging
5. 2008-2011: Diagnostic Imaging Residency, Iowa State University
6. 2007-2008: Rotating Small Animal Internship, Kansas State University
7. 2007: DVM, University of Wisconsin-Madison, School of Veterinary Medicine
8. 2007: MS (Comparative Biosciences), University of Wisconsin-Madison
9. 1996: BS (Bacteriology), University of Wisconsin-Madison

Research

Contrast enhanced ultrasonography, elastography, magnetic resonance imaging, tumoral acoustic and magnetic resonance characteristics, magnetic resonance coil design, interventional radiology.

Responsibilities

• Assistant Dean for Clinical Affairs
• Section Head, Diagnostic Imaging
• Residency Director, Diagnostic Imaging
• Fourth year Clinical radiology
• Third year General radiology
• First year large animal radiographic anatomy
• First year small animal radiographic anatomy
• Intern committee
• Clinical education task force

Clinical Interests

Contrast enhanced ultrasonography, elastography, dairy cattle ultrasonography, magnetic resonance imaging, tumor imaging, interventional radiology, and advanced imaging of large animal patients.

Graduate Training

• Diplomate American College of Veterinary Radiology
• 2008-2011: Diagnostic Imaging Residency, Iowa State University
• 2007-2008: Rotating Small Animal Internship, Kansas State University
• 2007: DVM, University of Wisconsin-Madison, School of Veterinary Medicine
• 2007: MS (Comparative Biosciences), University of Wisconsin-Madison

Recent Publications

1. Waller KR, O’Brien RT, McGuirk S. Ultrasonographic distribution and duration of edema in the post-partum and over-bagged dairy cow. The Bovine Practioner. 2007; 41(2):129-133

2. Waller KR, O’Brien RT, Zagzebski JA. Quantitative contrast ultrasound analysis of renal perfusion in normal dogs. Vet Radiol Ultrasound. 2007; 48(4):373-377

3. Delaney F, O’Brien RT, Waller K. Ultrasound evaluation of small bowel thickness compared to weight in normal dogs. Vet Radiol Ultrasound. 2003; 44(5):577-580.

4. Ziegler LE, O’Brien RT, Waller KR, Zagzebski JA. Quantitative contrast harmonic ultrasound imaging of normal canine liver. Vet Radiol Ultrasound. 2003; 44(4):451-454.

5. Trostle SS, O’Brien RT, Britt J, Waller K. Ultrasonographic evaluation of exogenous isobutane gas in the mammary gland of cows. JAVMA. 1999; 215(3):366-368.