7Bakos O, Lundkvist O, Bergh Y. Transvaginal sonographic evaluation of endometrial growth and texture in spontaneous ovulatory cycles-a descriptive study [J]. Hum gepord, 1993,8(6):799-806.
8袁耀萼,盛丹青.妇产科学新技术新理论[M].上海:上海科学教育出版社,1996:263.
9周用昌,郭万学.超声医学[M].第5版.北京:科学技术文献出版社.2006.
10Stein MVV , Ricci ZJ , Novak L , et al. Sonographic comparison of the tubal ring of ectopic pregnancy with the corpus lute urn. J UltrasoundMed ,2004 ,23 (1) :57-62.
