Is the follicle diameter of 18mm in vitro baby the dominant follicle?

Recently, I plan to have IVF and have finished my physical examination. Since it will take some time to officially start, I am learning about the dominant follicles of IVF. May I ask what types of follicles can be counted?

Is it the dominant follicle?

If the follicle diameter in vitro babies is 18mm, the shape is round and full, and the only follicle on one side of the ovary is basically well developed, this situation is a dominant follicle. In vitro baby egg retrieval process

The requirement for follicles is that the better the quality of the follicles, the easier it is to cultivate high-quality embryos. Therefore, if you can successfully obtain an advantage, many people mistakenly think that an advantage

The bigger the follicle, the better. In fact, this is wrong.

Characteristics of dominant follicles in vitro baby

1. The dominant follicle should be "large"

Generally speaking, when the follicle diameter reaches 18-25mm, it is a mature follicle. It has a full shape, round or oval shape, and a thin and clear inner wall. Such a "good follicle" is easier to conceive after ovulation. But follicles are not

The larger the better. If some follicles mature but do not rupture, the follicles will continue to grow. When they grow to 30-40mm, they will lose their ability to ovulate and luteinization occurs, which is also an abnormal condition.

2. The dominant follicle should be "round"

Follicles are like seeds. They should be full and round. If the difference between the two diameter limits of the follicle is ≥3mm, it is called a flat follicle. For example, B-ultrasound shows 15mm×20mm, which means that the quality of the follicle is poor.

3. The dominant follicle must be "independent"

Some people think that if there are many follicles developing at the same time, is it possible to have multiple births? Wouldn't this be a beautiful thing? In fact, if one ovary has multiple follicles developing at the same time, but there is no obvious advantage

Follicles may be caused by endocrine disorders, such as polycystic ovary syndrome. This situation will eventually only lead to no follicle growing too big or well, making it difficult to ovulate and conceive normally.

Superior follicles are the guarantee for the success rate of IVF. With superior follicles, as long as the technology of hospitals and doctors is formal and reliable, there is a high probability that they can cultivate relatively high-quality embryos. If the environment of the endometrium

It's okay, then the embryo can easily implant and develop smoothly.