B-ultrasound machine observes ovarian cysts in dairy cows Ovarian cysts are an important cause of infertility and can be divided into follicular cysts and corpus luteum cysts. It is necessary to distinguish between the two to determine the treatment method. Ultrasound imaging is a good means of distinction. Ultrasound imaging shows that follicular cysts are uniform non-reflective structures with a diameter of >25mm and a membrane thickness of <3mm. The non-reflective structure of corpus luteum cysts has a diameter of >25mm, with gray spots in the corpus luteum cavity or along the inner membrane, and a membrane thickness of >3mm. At the same time, it is also necessary to distinguish between corpus luteum cysts and corpus luteum with cavity, because the latter is non-pathological. The two can be distinguished according to size, cavity shape, membrane thickness and internal area reflection characteristics. Usually, the corpus luteum with cavity is <3mm, the membrane thickness is about 5--lomm, the shape is oval, the cavity shape is round or oval, the cavity filled with fluid is uniform, and there is almost no reflection. Corpus luteum cysts often have reflections.

B-ultrasound machine observes ovarian cysts after treatment in dairy cows Ultrasound can be used to quickly and effectively check the treatment effect of ovarian cysts. In the cystic follicles of cattle treated with GnRH, the ultrasound image changes, the cystic homogeneity and non-reflective structure become blurred, the cystic wall becomes luteinized, the cyst becomes smaller, 1 to 4 corpora lutea appear in the cystic ovary or the contralateral ovary, and superovulation occurs occasionally.

Treatment of ovarian cysts with progesterone vaginal sponge or GnRH does not take effect immediately, but it will cause estrus and ovulation. Corpora lutea will also appear. Treatment of corpora lutea cysts with PG will significantly reduce the size of the cysts within 2 to 4 days, and new corpora lutea will appear within 1 week.

Observation of uterine abnormalities in dairy cows by B-ultrasound machine Uterine abnormalities that can be diagnosed by ultrasound include endometritis, uterine suppuration, embryo loss and fetal mummification. For the ultrasound image of endometritis, the cavity is expanded, and the cavity contains scattered small fragments of semi-reflective structures to varying degrees. The degree of reflection depends on the composition of the fluid in the uterus. When the uterine contents are very thick and filled with white blood cells and fibrous fragments, its reflection characteristics are similar to those of the uterine wall. In fetal loss, the uterine wall thickens and the fetal skeleton appears stretched and reflexive in the nonreflective fetal fluid. In fetal mummification, the fetus appears as a mass with a complete lack of fetal fluid.