Abstract: Conventional two-dimensional ultrasound（2D-US） had been widely used for the evaluation of adnexal mass， include morphological assessment， color and pulsed Doppler sonographic assessment. Three dimensional power Doppler（3DPD） ultrasound could offer more three dimensional morphology information than 2D-US， including qualitative assessment of adnexal masses，preoperative 3DPD histogram analysis， quantitative assessment of the vascularization and blood flow of adnexal masses. It had high reproducibility， and could elevate the diagnosis accuracy of discriminating ovarian tumor. These new techniques may assist in the evaluation of adnexal malignancy， and had more advantages relative to conventional 2D-US. 3DPD ultrasound may become an important method in future gynecologic oncology research and in the evaluation of adnexal malignancy used in clinical practice.

Key words: Ultrasonography, Doppler, color, Imaging, three-dimensional, Ovarian neoplasms, Diagnosis, differential