Fig. 3From: Luteal blood flow as a predictive factor for methotrexate treatment outcomes in women with unruptured tubal pregnancyCorpus luteum measured by 3D power Doppler ultrasound. The arrow indicates the corpus luteum (*P < 0.05). PLBF: Poor luteal blood flow group, ALBF: Abundant luteal blood flow group. a Poor luteal blood flow and b abundant luteal blood flow are presented. c and d Comparison of volume, VI, FI and VFI of the corpus luteum measured by 3D power Doppler ultrasound between PLBF and ALBFBack to article page