Table 1.

Comparison of the different physical tools to assess ovarian reserve.

Physical measurement tool	Advantages	Disadvantages
Ovarian volume	Confirms menopausal status reliable predictor of declining OR status independent of advancing age	Significant changes in ovarian volume not discernable during end of reproductive years Highly variable in younger infertile patients
Antral follicle count	Consistent correlation to the age-related decline of reproductive capacity There is no significant difference between right-sided and left-sided antral follicle counts within the same individual The AFC is a useful prediction tool for poor IVF response or hyper IVF response	Performance for predicting failure to achieve pregnancy is poor Highly variable in younger infertile patients AMH may be a better/equivalent predictor of age-related decline of reproductive capacity
Ovarian stromal blood flow velocity	Results are highly predictive of ovarian responsiveness	Results do not always correlate with advancing age