When autocomplete results are available use up and down arrows to review and enter to select. Touch device users, explore by touch or with swipe gestures.
Doppler ultrasound is the preferred method for diagnosing deep vein thrombosis (DVT). It has high specificity and sensitivity for detecting thrombi in the proximal leg veins. Isolated calf vein thrombi can be missed by Doppler in up to 30% of cases. Clinical evaluation alone is only positive for DVT in about 50% of cases. While D-dimer tests are sensitive, they are not specific for DVT. Doppler ultrasound can directly visualize thrombi as noncompressible segments within veins. Indirect signs…
This document summarizes how to perform an ultrasound scan to assess chronic venous disease in the lower limbs. It outlines the anatomy of the venous system, including the superficial and deep veins and perforating veins. It describes how to evaluate for reflux in the veins using Doppler ultrasound, and provides guidance on scanning the different areas of the lower limbs to investigate sources of reflux or varicose veins. The goal is to identify reflux or obstructions in the deep or…