What is the normal value of mature follicles? What are the characteristics?

Pregnancy is the most important thing in a woman's life, but it is not that simple, because various destructive factors cause many women to have pregnancy problems. Among them, follicular hypoplasia accounts for a considerable proportion. If the follicle development does not meet the standards, pregnancy is impossible. Let’s take a look at what is the normal value of mature follicles? What are the characteristics?

Mature follicles may show the following characteristics:

① The follicle is round or oval, with a diameter of 15-30mm (21.2+-0.53mm). The follicle is echo-free, clear and pure, with clear boundaries and thin walls.

②②One day before ovulation, 20% of the mature follicles can be seen in the cumulus image, which appears as a short and strong echo near the wall of the follicle.

Mature follicles are one of the structural components of the ovary. Every month, women release a mature egg, and this egg is generally considered mature if it is larger than 20mm.

The mature follicle cavity is large and the cumulus is obvious. The endometrial cells are close to the granulosa layer of the follicle and are separated from the granulosa layer cells by a basement membrane. The endometrial cells are polygonal, with clear cytoplasm and round nuclei. Many capillaries can be seen between the cells. The exometrial cells are located in the outermost layer, mostly spindle-shaped, and have no obvious boundary with the surrounding connective tissue.

Every month, women will only release one mature egg, and this mature egg is generally considered a mature egg when it is larger than 20mm. However, there are individual differences. Some people will release the egg when the follicle grows to 15mm, while others will release the egg when it grows to 25mm. The specific individual situation can be determined by a periodic B-ultrasound examination. Generally, mature follicles will be discharged within one to two days, and the discharged follicles can generally survive for 2 days.