Ma Hongyan: Consultant of Ultrasound Imaging Department

　　Work in the ultrasonic diagnosis of more than 30 years, the Chinese people's liberation army 210 hospital in dalian, head of pa/chamber of eugenic and superior nurture, has a solid business in obstetrics and gynecology ultrasound diagnosis ability and rich practical experience, especially transvaginal colour to exceed to the diagnosis of uterine rupture of early ectopic pregnancy early have unique insights, and a review of high-risk pregnancy, placental abnormality and the placenta is rich in experience.