Patient's question:
NoDoctor's answer:
Ultrasound can detect small follicles in the ovaries during days 3-5 of the menstrual cycle, which gradually grow larger. On average, they reach their maximum size around day 14 and can lead to ovulation. From day 5 of the menstrual cycle to ovulation, the dominant follicle grows by an average of 1.5 mm per day; by day 10, it grows by an average of 1.2 mm per day; and 4 days before ovulation, it grows by an average of 1.9 mm, reaching full maturity.