The vascular laboratory is the site of a variety of non-invasive tests used to measure blood flow to help diagnose vascular conditions such as peripheral artery disease (PAD), also known as peripheral vascular disease (PVD). The Peripheral Artery Disease Program offers specialized care to meet the individual needs of our patients. Medical College of Wisconsin physicians are highly skilled and experienced in performing state-of-the-art procedures to diagnose and treat all types of vascular problems, including complex cases.

Vascular Lab Tests Measure Blood Flow

Some of the more common tests patients experience in the vascular lab include:

Ankle Brachial Index (ABI)

An ABI is a simple, non-invasive, painless test that compares blood pressure readings in a person’s ankles with blood pressure readings in the arms. This involves placing a blood pressure monitor at the ankle and on the arm while a patient is at rest. The test can also be performed after walking on a treadmill to reproduce painful symptoms associated with walking (intermittent claudication). If a blockage is present, imaging (ultrasound or angiography) can be used to pinpoint the specific artery that is blocked.

Carotid Duplex Scan

This non-invasive vascular ultrasound test assesses the blood flow of the arteries that supply blood from the heart through the neck to the brain. “Duplex” refers to the fact that two modes of ultrasound are used – Doppler and B-mode. The B-mode transducer (like a microphone) obtains an image of the carotid artery being studied. The Doppler probe within the transducer evaluates the velocity and direction of blood flow in the vessel.

Extremity Arterial Mapping

Arterial mapping of the extremities uses non-invasive duplex ultrasound technology to examine blood flow in the arteries in the arms and legs. Lower extremity arterial mapping can help determine which blood vessels would be the best candidates for a bypass graft.

Treadmill Stress Test

This test is given while a patient walks on a treadmill to assess the heart during exercise.

Venous Duplex Ultrasound

Duplex ultrasound is a procedure that combines Doppler (high-frequency sound waves) flow and conventional ultrasound imaging to allow physicians to see the structure of blood vessels. Duplex ultrasound shows how blood is flowing through the vessels and measures the speed of the flow of blood. It can also estimate the diameter of a blood vessel and the amount and location of obstruction (if any) in a blood vessel. Aortoiliac duplex scanning helps evaluate abdominal aneurysm and other conditions.

Learn more about other heart and vascular diagnostic tests we offer.

Our Cardiovascular Program continues to receive recognition as one of the top programs nationally. We are honored to provide high-quality, effective care for even the most high-risk patients.

  • In its 2024 Specialty Excellence Awards, Healthgrades recognized Froedtert Hospital as one of America’s 50 Best Hospitals for Cardiac Surgery, one of America’s 100 Best Hospitals for Cardiac Care and one of America’s 100 Best Hospitals for Coronary Intervention, as well as other specialty achievements in various areas.

    For the second year in a row, Froedtert Hospital was identified as one of the nation’s 50 Top Cardiovascular Hospitals™ according to an independent quality analysis based on a balanced scorecard provided by PINC AI™, and reported by Fortune. The hospitals recognized in the top 50 operated at lower cost and had better outcomes, recording significantly higher inpatient survival rates, fewer patients with complications, lower readmission rates and up to nearly $10,000 less in total costs per patient case. According to the study’s analysis, if all hospitals operated at the level of this year’s top performers, there could be 7,600 fewer deaths due to heart disease, 6,700 fewer bypass and angioplasty patients who suffer complications, and more than $1 billion in costs saved for the 2024 study year. Froedtert Hospital was ranked in the category of top teaching hospitals with a cardiovascular residency program. In this cohort of hospitals, Froedtert Hospital was ranked No. 4 in the country. No other hospital in Wisconsin was recognized with this national distinction.

    The Society for Vascular Surgery's Vascular Quality Initiative (SVS VQI) has awarded Froedtert Hospital three out of three stars for its active participation in the Registry Participation Program. The mission of the SVS VQI is to improve patient safety and the quality of vascular care delivery by providing web-based collection, aggregation and analysis of clinical data submitted in registry format for all patients undergoing specific vascular treatments. The VQI operates 14 vascular registries.

    The American Heart Association recognized Froedtert Hospital with its Get With the Guidelines® Heart Failure Gold Plus Award. In addition, the hospital was recognized on the AHA’s Target: Heart Failure(SM) Honor Roll and received the AHA’s Target: Type 2 Diabetes Honor Roll™ award. 

    The American Heart Association also recognized Froedtert Hospital with its Get With the Guidelines® — Coronary Artery Disease Mission: Lifeline STEMI Receiving Silver Plus and Mission: Lifeline NSTEMI Silver awards. These awards demonstrate our commitment to improving care by adhering to the latest treatment guidelines and streamlining processes to ensure timely and proper care for heart attacks.

    The American Heart Association recognized Froedtert Hospital with its Get With the Guidelines® AFib Gold Award.

    ​The Cardiovascular Intensive Care Unit (CVICU) and Neurosurgical Intensive Care Unit (NICU) at Froedtert Hospital have each received a silver-level Beacon Award for Excellence from the American Association of Critical-Care Nurses. This award recognizes unit caregivers who successfully improve patient outcomes and align practices with AACN’s six Healthy Work Environment Standards. Receiving this national three-year award with gold, silver and bronze designations, marks a significant milestone on the path to exceptional patient care and achieving a healthy work environment.