Vascular and Interventional Radiology

Interventional radiology (abbreviated IR or sometimes VIR) is a field of medicine in which minimally invasive procedures are performed using image guidance (e.g., CT, fluoroscopy, ultrasound). Some of these procedures are done to diagnose illness while others are done for treatment purposes. Different imaging modalities available to interventional radiologists enable them to manipulate and guide tiny instruments throughout the body which in many instances avoids more invasive open surgery.

Vascular and Interventional Radiology is one of the most rapidly expanding areas in medicine and has led the current movement toward minimally invasive therapy. Our patient population ranges from infancy to the elderly and includes procedures spanning the full range of the field. We perform both vascular and non-vascular interventions including arterial and venous interventions such as angioplasty, stenting, atherectomy, cryoplasty, thrombolysis, and embolization as well as biliary, renal, enteric, pulmonary, and transplant related interventions.

We function both as an admitting service and in a consulting role. A subset of our patients is seen longitudinally in our clinic. Our section also interprets the non-invasive vascular studies such as MRA and 64-slice CTA. These are performed with state-of-the-art equipment which rates the best in the region. By utilizing the most sophisticated equipment and continuing to perform procedures which are at the leading edge of the field, we continue to maintain and demand the highest quality in patient care.

The Section features four interventional radiology suites: Phillips Alura, GE LCA, Siemens Multistar, and Siemens Neurostar staffed by eight full time VIR radiology technologists. Our patients are seen in a 13 bed peri-procedural and clinic area staffed by 20 full-time nurses. We also have two dedicated ultrasound machines for VIR and an EVLT laser for varicose vein ablation.

The section continues to build upon its rich tradition of clinical and animal research. We are actively involved with a number of clinical trials. Current research projects include protection devices for radiofrequency ablation, retrievable inferior vena caval filter studies, combined therapy for hepatocellular carcinoma, dialysis interventions, and 64-slice CTA for peripheral vascular disease.


Brian Funaki, MD, FSIR, FAHA
Professor of Radiology
Section Chief, Vascular and Interventional Radiology

Jeffrey Leef, MD
Assistant Professor of Radiology

Jonathan Lorenz, MD
Associate Professor of Radiology
Education Director, Interventional Radiology

Thuong Van Ha, MD
Associate Professor of Radiology
Director, Clinical & Research Interventional Radiology

Steven M. Zangan, MD
Assistant Professor of Radiology
Associate Director, Radiology residency Program

Rakesh Navuluri, MD
Director, Interventional Radiology Fellowship Program

Karin Dill, MD
Co-Director, Cardiac MRI & CT