For women with menstrual flow, it is best to review the ultrasound just after the menstrual period to rule out the possibility of physiological cysts. In the case of dripping menstruation, it can be reviewed at any time. For those with prolonged menstruation, it is not necessary to wait for the complete cleansing of the menstrual period, but usually 7 days after the onset of menstruation in order to exclude other parts of the disease. For postmenopausal women, ultrasound examination is always available.