What is the role of ultrasonography in the workup of diabetic foot ulcers?

Updated: Oct 15, 2020
  • Author: Tanzim Khan, DPM; Chief Editor: Romesh Khardori, MD, PhD, FACP  more...
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Answer

Duplex ultrasonography can provide images of arterial segments that help localize the extent of disease, and simultaneous Doppler measurement of flow velocity can help estimate the degree of stenosis. Duplex scanning is quite useful in visualizing aneurysms, particularly of the aorta or popliteal segments. Use of this technique probably is best left to the discretion of the vascular specialist.

A handheld Doppler scanner may be used to assess arterial signals, to localize arteries to facilitate palpation of pulses, or to determine the loss of Doppler signal as a proximal blood pressure cuff is inflated (as in measurement of systolic pressure in extremity arteries).

Laser Doppler studies also have been used but may not be reliable.


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