Fig. 2

The VOCAL technique was used to display the volume of a healthy ovary (bottom right) and the ovarian vascular indices, including vascularization index (VI), flow index (FI), and vascular-flow index (VFI) (top left).

The VOCAL technique was used to display the volume of a healthy ovary (bottom right) and the ovarian vascular indices, including vascularization index (VI), flow index (FI), and vascular-flow index (VFI) (top left).