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Department of Radiology

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Interventional Radiology


The mission of the Interventional Radiology Division at the University of Colorado Anschutz Medical Campus is to provide the best care to our patients, using innovative techniques across highly diversified medical and surgical subspecialties. We have a deep commitment to trainee education at all levels, with a focus on developing future leaders in Interventional Radiology (IR).  We have aligned clinical, translational, and basic science research interests to support our mission of scientific inquiry and discovery.

Division Leadership & Staff

The IR section is led by Division Director Robert K. Ryu, M.D., FSIR 

Other IR faculty include:

Jamie Arton, PA-C 

Janette Durham, M.D., MBA, FSIR  (Medical Director)

Matt Gipson, M.D.

​Rajan Gupta, M.D.

Thor Johnson, M.D., Ph.D. (Director of IR Research)

Anne Kirkpatrick, PA-C​

​​Kimi Kondo, D.O. (Director of Medical Student Education)

David Kumpe, M.D. (Director of Neuro-Interventional Radiology)

Shelley Rio, RN, MSN​

Paul J. Rochon, M.D. (IR Fellowship Director)

Mitch Smith, M.D. (Director of IR Quality)

Patient Care

The IR section, which performs approximately 9,000 procedures each year, consists of nine fellowship-trained interventional and neurointerventional radiologists, and three dedicated mid-level providers.  The IR service provides formal consultative services and an inpatient admission service, for adults as well as pediatric patients at the Children’s Hospital of Colorado (also on the Anschutz Medical Campus).  In addition to performing the image-guided procedures, each IR physician runs a weekly outpatient clinic.  Finally, the IR section participates in several weekly multidisciplanary conferences and clinics on the Anschutz Medical Campus.



Under the direction of Paul J. Rochon, M.D., the IR Fellowship program offers four, funded positions annually. The IR Division also offers a Clinical Training Pathway for resident candidates, which will evolve into an integrated IR Residency Program beginning in 2016.  On any given month, there are five to six residents and fellows rotating through the IR section at all three of our teaching hospitals (University of Colorado Hospital, Denver Health Medical Center, and the VA Medical Center).  The section participates actively in a core lecture series for all radiology residents, as well as providing frequent case conferences (at least two per month) for residents.  Daily teaching rounds are included before the start of every day, and there are two weekly fellows conference with topics ranging from morbidity and mortality, lectures presented by the fellows, didactic lectures, interesting case conference, multidisciplinary vascular conference, research conference, and journal club. 

There is a focused clinical rotation for our fourth year medical students under the direction of Dr. Kimi Kondo, while multiple faculty members are involved as preceptors for third year medical students in the Foundations of Doctoring program.  In addition, the IR faculty are involved in numerous research projects with medical students during all four years of medical school. 


Research & Academics

The IR Division has an active and productive clinical, basic science, and translational research program, with significant intra- and extramural grant support.  The research enterprise is under the direction of Dr. Thor Johnson.  Specific areas of research include interventional oncology, portal hypertension management, intra/extracranial vascular malformation therapies, venous interventions, and hepatic transplant interventions.  IR faculty also hold many leadership positions in national and regional societies, including presidency in three major professional organizations, as well as serving on many university and hospital committees.


Please click this link for a full list of our Interventional Radiology faculty.