Power Doppler Mode is used to visualize the intensity of flow

Power Doppler Mode can provide a visual overview and general quantification of flow velocity and spatial vascular profile. This is a particularly useful tool in the assessment of vascularity. Measurement tools in the Power Doppler Mode can calculate percent vascularity which is an index of relative vascular density. Small changes in organ vascularity can be detected with Power Doppler imaging and monitored with progression and regression of pathology or as a response to therapy. Power Doppler imaging can be done in conjunction with 3D-Mode to provide volumetric information. This option is available for both the Vevo 2100 and Vevo 770 Imaging Systems.

3D Power Doppler imaging of the mouse testicle. Grey haze is 3D tissue overlay and the orange color represent Power Doppler signal detecting major vessels within the testicle.

3D Power Doppler imaging in subcutaneous melanoma tumor. Images show the same tumor from day 1 and day 4 of a study. As the tumor grows from day 1 to day 4, tumor vascularity increased. Images courtesy of Hastie, Chambers, Lacefield and Fenster, Robarts Research Institute, London.