Fig. 1From: Fecundity disorders in older women: declines in follicular development and endometrial receptivityFollicular development, PI/RI of the uterine arteries and subendometrial region before ovulation between older women and young women (PI: pulsatility index, RI: resistance index, *p < 0.05). a and b Comparison of diameter of dominant follicle and endometrial thickness. c and d Comparison of averaged uterine PI and RI. e and f Comparison of subendometrial region PI and RIBack to article page