Renal artery stenosis: A narrowing of the arterial supply of the kidneys, which may result in high blood pressure (hypertension) or renal insufficiency.Diagnosis of these conditions is made by measuring the diameter of stenosis, the blood pressure across the area of stenosis, renal vein renin sampling, and captopril challenge testing. Stenosis may be treated by balloon angioplasty and stenting.

Nephrostomy tube placement: In conditions where a blockage exists between the kidney and the urethra, such as with kidney stones, a tube may be placed into the kidney under imaging guidance to allow the drainage of urine and to prevent kidney damage.

Percutaneous drains: Drainage of fluid from various body compartments using catheters and drains placed through the skin (e.g., abscess drains to remove pus, pleural drains).


Samples of tissue may be required to identify the cause of certain diseases. Using imaging guidance, interventional radiologists may minimally invasively reach underlying tissue using a small needle to pierce the skin and retrieve tissue samples from the target organ.

These procedures can help vast population in avoiding major disabling surgeries.