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Interventional Radiology

Interventional RadiologyInterventional radiology is a rapidly growing specialty which uses different imaging methods to treat patients and their diseases. The methods used include fluoroscopy (real time X-rays), ultrasound and CAT scans. Using these tools, interventional radiologists introduce small tubes called catheters into patients' bodies to deliver targeted, minimally invasive therapies for a number of medical conditions.

Almost all of the procedures performed by interventional radiologists involve very small incisions and are done under light sedation. Many procedures are performed on an outpatient basis or require only a short hospitalization. In some cases, these therapies have replaced more invasive surgical therapies in the treatment of certain diseases and, therefore, are associated with a shorter recovery period.

Interventional radiologists are physicians who receive their initial training in diagnostic radiology (learning to interpret studies such as CAT scans, ultrasound and MRI) and then receive specialized training in performing advanced procedures using imaging guidance. The interventional radiologists at Lenox Hill Hospital are board-certified by the American College of Radiology in both diagnostic radiology and interventional radiology.

For more information on interventional radiology, visit

Our Physicians

Daniel Javit, MD

Daniel Javit, MD, has been an interventional radiologist at Lenox Hill Hospital since 1994. He graduated cum laude from Amherst College and attended Cornell University Medical College. Dr. Javit completed his medical internship at Roosevelt Hospital and his residency in radiology at the Mount Sinai Medical Center. He also completed a fellowship in interventional radiology at the New York Hospital-Cornell University Medical Center.

Dr. Javit is board-certified by the American College of Radiology and has received the Certificate of Added Qualification in Diagnostic and Interventional Radiology. He has received the organization's Physician Recognition Award annually since 1996.

Mark Westcott, MD

Mark Westcott, MD, graduated with honors from the University of Notre Dame. He attended Georgetown University Medical School and trained in diagnostic radiology at Northwestern Memorial Hospital in Chicago. He then completed a fellowship in interventional radiology at Thomas Jefferson University Hospital in Philadelphia.

Dr. Westcott is board-certified by the American College of Radiology in both Diagnostic Radiology and Interventional Radiology. He received the Certificate of Added Qualification in Diagnostic and Interventional Radiology in 1996. He has been in practice since 1994 and joined Lenox Hill Hospital in the spring of 2002.

Conditions & Treatments

Interventional radiologists perform a wide array of procedures. Following is a sample of some of them:

  • Uterine artery embolization is a procedure which slows the flow of blood to the uterus in patients who have symptoms from fibroids, such as heavy menstrual bleeding, severe menstrual cramps, and pressure effects from fibroids. The symptoms usually disappear after the fibroids' blood supply has been reduced. Learn more...

  • Varicose vein ablation treats varicose veins in the legs by placing a laser probe into the affected vein and delivering a controlled amount of heat, closing off the varicose vein.

  • Chemoembolization involves injecting chemotherapeutic drugs directly into liver tumors as well as decreasing the blood supply to these tumors with vessel blocking agents. Learn more...

  • Radiofrequency ablation is a procedure where a special needle is placed into tumors of the liver and kidneys, delivering a focused amount of energy that heats the tumors to selectively kill the tumor cells. Learn more...

  • Venous access involves placement of a wide array of catheters into a patient's veins for various reasons such as the administration of chemotherapy (ports), administration of intravenous antibiotics, and access for patients who need dialysis (dialysis catheters).

  • Treatment of vascular diseases such as atherosclerosis, which can cause narrowing of vessels in the arms, legs, and kidneys are treated with minimally invasive techniques. Treatments include opening up these narrowed arteries with balloons or stents or re-opening clotted vessels with medications that dissolve blood clots.