Interventional Radiology

What is Interventional Radiology?

Interventional radiology is a subspecialty of radiology, which involves minimally invasive procedures, performed using image-guidance for diagnostic or treatment purposes. Interventional Radiologists use their expertise in reading X-rays, ultrasounds and other medical images to guide small instruments such as catheters (tubes that measure just a few millimeters in diameter) through the blood vessels or other pathways to treat disease through the skin.

Interventional radiology procedures are an advance in medicine that replace open surgical procedures because these procedures are typically much less invasive and much less costly than traditional surgery. They are generally easier for the patient because they involve no large incisions, less risk, less pain and shorter recovery times.

Some of the other advantages of interventional radiology are that most procedures can be performed on an outpatient basis or require only a short hospital stay, and general anesthesia usually is not required.


Princeton Radiology offers the following Interventional Radiology procedures at our private, outpatient facility in Monroe:

Ultrasound-Guided Breast Biopsy

Ultrasound-Guided Breast Biopsy is preformed using a needle and ultrasound imaging to locate and remove some cells from a suspicious area in the breast. These cells are then sent to a lab to determine if they are benign or cancerous.

Ultrasound-Guided Thyroid Biopsy

Ultrasound-Guided Thyroid Biopsy is preformed using a needle and ultrasound imaging to locate and remove some cells from a suspicious area called a “nodule” in the thyroid gland. These cells are then sent to a lab for examination to determine if they are benign or cancerous.

Ultrasound Paracentesis 

Ultrasound Paracentesis is a procedure which involves the extraction of fluid from the peritoneal cavity in the abdomen using a needle and ultrasound imaging for guidance. The fluid collected is sent to a lab for analysis. Unexplained fluid in the abdomen is most commonly caused by liver cirrhosis.

MRI-Guided Prostate Biopsy

MRI-Guided Prostate Biopsy is performed using Princeton Radiology’s unique prostate MRI imaging on our Wide Bore 3T MRI machine that provides a 3D color map displaying potential prostate tumor sites. Our radiologists then use these images to obtain cells from the targeted suspicious areas. These cells are tested in a lab to determine if they are cancerous. Due to the precise targeting provided by MRI many fewer biopsy samples are needed for accurate diagnosis – sometimes 80-90% fewer than traditional ultrasound-guided biopsy. Fewer needle sticks means lower risk of infection, bleeding, pain, and a shorter recovery time.

To schedule an appointment in MONROE for an interventional radiology procedure, please call 609.655.1448.


At our Hospital locations, Penn Medicine Princeton Medical Center and CentraState Medical Center, interventional radiology is used to successfully treat a wide range of diseases and conditions. These include the field’s pioneering procedures of angioplasty and catheter-delivered stents to treat blocked arteries. In addition, our fellowship-trained medical team is one of the few in the state using aortic stent grafts to treat aortic aneurysms, and was one of the first in the state to perform advanced angioplasty procedures known as cryoplasty, which actually freezes plaque in blocked arteries so the body can efficiently remove it. Other therapeutic procedures, such as vertebroplasty, a minimally invasive procedure where bone cement is percutaneously injected into a fractured vertebra in order to stabilize it and reduce pain, is also offered.

Additionally, a wide range of exams, including port and PICC placement venous access; dialysis catheter placement; and diagnostic procedures such as angiograms and discograms are available.

At Penn Medicine Princeton and CentraState, interventional radiology is used to successfully treat:

  • Uterine fibroid tumors using a minimally invasive procedure called uterine fibroid embolization to shrink the tumors as an alternative to hysterectomy
  • Liver and other cancers using chemoembolization to carry chemotherapy directly to the site to shrink tumors that normally are resistant to treatment
  • Spinal fractures from conditions such as osteoporosis by injecting a cement-like substance for stabilization using a process known as vertebroplasty
  • Peripheral vascular disease by unblocking arteries

To schedule an appointment for an interventional radiology procedure, please call:

Penn Medicine Princeton – 609.497.4040
CENTRASTATE – 732.294.2778