4[7]Gaglioti R,Danelon D,Bontempos F,et al.Cerebral ventricukmegaly:outcome in 176 cases[J].U ltrasound O bste Gynecol,2005,25(4):372-377.
5[2]LI Y.Application assessment of diagnosing fetal malformation with antepartum ultrasound[J].Maternal and Child Health Care of China,2005,21(1):2831.
6Goldstein I, Tamir A, Weiner Z, et al. Dimensions of the fetalfacial profile in normal pregnancy. Ultrasound Obstet Gynecol, 2010,35 (2) : 191-194.
7Odibo AO, Sehdey HM, Sproat L, et al. Evaluating the efficien- cy of using second-trimester nasal bone hypoplasia as a single or a combined marker for fetal aneuploidy. J Ultrasound Med, 2006, 25(4) :437-441 ; quiz 443.
8Persico N, Molina F, Borenstein M, et al. Nasal-bone length in euploid fetuses at 16-24 weeks" gestation by three-dimensional ul- trasound. Ultrasound Obstet Gynecol, 2010,36(3):285-290.
9Guis F, Ville Y, Vincent Y, et al. Ultrasound evaluation of the length of the fetal nasal bones throughout gestation. Ultrasound Obstet Gynecol, 1995,5(5) :304-307.
10Cusick W, Provenzano J, Sullivan CA, et al. Fetal nasal bone length in euploid and aneuploid fetuses between 11 and 20 weeks" gestation: A prospective study. J Ultrasound Med, 2004, 23 (10) : 1327-1333.