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Duplex Ultrasound

Duplex ultrasonography (more commonly but less correctly known as duplex ultrasound) is a form of medical ultrasonography that incorporates two elements:

1) Grayscale Ultrasound to visualize the structure or architecture of the body part. No motion or bloodflow is assessed. This is the way plaque is directly imaged in a blood vessel, with the reader typically commenting on crossectional narrowing (greater than 70% is typically considered worthy of treatment).

2) Color-doppler Ultrasound to visualize the flow or movement of a structure, typically used to image blood within an artery. We see blood flow velocities increase through a region of narrowing, like a finger pressing up against the end of a running garden hose. Increased velocities indicate a region of narrowing or resistance (velocities greater than 250 cm/sec typically considered worthy of treatment).

Vascular ultrasonography is the main branch of radiology that uses duplex. Vascular ultrasonography, a subspeciality within ultrasonography, helps determine multiple factors within the circulatory system. It can evaluate central (abdominal) and peripheral arteries and veins; it helps determine the amount of vascular stenosis (narrowing) or occlusion (complete blockage) within an artery; it assists in ruling out aneurysmal disease; and it is the main aid to rule out thrombotic events. Duplex is an inexpensive, non-invasive way to determine pathology. Duplex evaluation is usually done prior to any invasive testing or surgical procedure.[1] Ultrasound duplex scanning can provide additional information that may guide therapeutic decisions. The location and severity of arterial narrowings and occlusions can be identified. The vascular technologist can map disease in lower-extremity segments with great accuracy - though duplex scanning is more time-consuming than other lower-extremity arterial studies.

Westchester Medical Center
100 Woods Road
Valhalla, NY 10595
914.493.7000
   
       
Hawthorne
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Hawthorne, NY 10532
914.909.6835
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Mount Kisco, NY 10549
914.241.3204
       
New Windsor Division
575 Hudson Valley Avenue, Suite 200
New Windsor, NY 12553
845.561.2773
    White Plains
15 North Broadway
White Plains, NY 10601
914.593.1234

Vascular Surgery and Laser Vein Center

Please contact us at 877.WMC.VEIN or 877.962.8346.

Babu, Sateesh
Babu, Sateesh
Chief, Vascular Surgery
Vascular Surgery
Laskowski, Igor
Laskowski, Igor
Chief, Endovascular Surgery
Vascular Surgery
Carroll, Francis X.
Thoracic Surgery
Vascular Surgery
Goyal, Arun
Vascular Surgery
Mateo, Romeo B.
Vascular Surgery
Shah, Pravin M.
Vascular Surgery
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