What is the normal value of follicular diameter?

Under normal circumstances, women can't see the eggs before ovulation, because at that time, the eggs are very small, and only when they develop into follicles can they be seen under the microscope. When the follicle grows up and matures, it will expel eggs. If the follicle does not develop well or slowly, it will not ovulate. So, what is the normal value of follicular diameter?

What is the normal value of follicular diameter? Mature eggs are generally larger than 20mm, and the smallest is larger than 18 mm, which can be divided into eight grades from primary follicles to mature follicles. The first five grades are too small and take too long to grow up, which is of little practical significance. From the sixth grade, we should pay attention. The sixth-grade follicle grows to 10mm after 5 days with a diameter of 5 mm and becomes the seventh-grade follicle. After 5 days of development, the follicles reached the eighth grade, with a diameter of 16 mm, and the eighth grade follicles were mature follicles.

Therefore, it takes 10 days to grow from grade 6 follicle to grade 8 follicle, which happens to be the follicular phase in a menstrual cycle. From 16mm, 20mm follicles developed after 2-3 days, and the eggs were discharged.

Follicle size and follicular development have great influence. If the follicle size is not standard and can not reach the normal value, it will affect normal ovulation or the quality of the eggs discharged is not good, which will affect normal pregnancy. The normal standard of follicle size is that the follicle is round or oval with a diameter of 18-25mm, which will affect normal ovulation. B-ultrasound monitoring showed that the largest follicle appeared in menstrual period 10- 16 days, with a diameter of 20mm, a thin wall, protruding to one side of the ovary and good internal sound transmission. Ovulation is generally achieved within 10 hour, and ovulation time is more common in menstrual period 12- 18 days, with a few in 2008.

According to the characteristics of normal follicles, B-ultrasound monitoring showed that the largest follicle appeared on the first day of menstruation 10- 16, with a diameter of 20mm, thin wall, protruding to one side of the ovary and good internal sound transmission. Ovulation usually occurs within 10 hour, and the ovulation time is on the day of menstruation 12- 18. Characteristics after ovulation: the follicular wall partially collapses, the edge is serrated, and there are many thin spots inside. 5- 15mm liquid dark area can be seen in the hysterorectal recess, which generally disappears after ovulation 1 day, and the pregnancy success rate is high.

It is generally believed that the diameter of mature follicles is 18-25mm, and the pregnancy probability is high, and the diameter of follicles is.