Figure 10.

Polycystic ovaries. Three-dimensional sonography facilitates objective assessment of the ovarian stroma, through measurement of its mean grey signal intensity, its vascularity and its volume, which may be calculated by subtracting total follicular volume from total ovarian volume (Fig. 9A). Ovarian blood flow is increased and associated with significantly higher three-dimensional indices of vascularity than ovaries with a normal appearance (Fig. 10b).