Three-dimensional power Doppler ultrasonography in evaluation of adnexal masses

The introduction of 3DPD has opened the possibility to characterize microvasculature of the adnexal masses and objectively assess tumor vascularization. 3DPD allows also an objective measurement of vascularity of a given region of interest by estimating 3 vascular indices (vascularization index [VI], flow index [FI], and vascularization-flow index [VFI]) within such region. The aim of this review article is to evaluate the role of 3DPD in the assessment of adnexal masses vascularity, its ability to discriminate benign masses from malignant ones.