Obstetrics gynecology obstetrics gynecology ultrasound in obstetrics gynecology vol 32 issue 2 abstract journal tools get new content alerts get rss feed save to my profile get sample copy recommend to your librarian journal menu journal home find issues current issue all issues find articles early view accepted articles most accessed most cited get access . Three dimensional 3d ultrasound is an easy and noninvasive technique in the clinical practice of obstetrics and gynecology it can be used in the an. Recent advances in ultrasound technology have enabled the diagnosis of overall tissue vascularization by three dimensional 3d power doppler this case report describes 3d power doppler characteristics of unilateral ovarian torsion 2 weeks after embryo transfer in a pregnant patient with bilateral hyperstimulated ovaries before laparoscopic . Three dimensional power doppler validity and reliability w p martins corresponding author wpmartinsgmailcom departamento de ginecologia e obstetricia do hospital das clinicas 8 andar faculdade de medicina de ribeirao preto universidade de sao paulo dgo fmrp usp av bandeirantes 3900 campus da usp 14049 900 . The introduction of three dimensional 3d power doppler ultrasound has opened up the possibility of objectively assessing vascularization in a whole organ or tumor the aim of this study was to determine if tumor vascularity as assessed by 3d power doppler ultrasound can be used to discriminate between benign and malignant ovarian tumors if adding 3d power doppler ultrasound examination