Click on image to view larger version.

Figure 1 CEU Data From a Normal Subject and a Patient With PAD

Images were obtained at incremental pulsing intervals in seconds (s) and corresponding time versus intensity data from the calf plantar flexor muscles at rest and during exercise in a limb from a control subject (A) and a patient with peripheral arterial disease and claudication (B). For each panel, rest images are above and exercise images are below. Despite an identical workload for the 2 patients (38 W), exercise blood flow and flow reserve were markedly impaired in the patient with peripheral arterial disease (PAD). Color scale is shown at bottom of the first image. BG = background image obtained immediately after microbubble destruction; CEU = contrast-enhanced ultrasound.