25. Mercé LT. Estudio Doppler de la implantación y placentación inicial. In: Kurjak A., Carrera J.M. (Eds). Ecografía en Medicina Materno-Fetal. Barcelona: Masson; 2000. P. 113–36.
26. Steer C.V., Campbell S., Tan S.L., Crayford T., Mills C., Mason B.A., Collins W.P. The use of transvaginal color flow imaging after in vitro fertilization to identify optimum uterine conditions before embryo transfer. Fertil Steril. 1992 Feb; 57(2): 372–6.
27. Ivanovski M., Damcevski N., Radevska B., Doicev G. Assessment of uterine artery and arcuate artery blood flow by transvaginal color Doppler ultrasound on the day of human chorionic gonadotropin administration as predictors of pregnancy in an in vitro fertilization program. Akush Ginekol (Sofiia). 2012; 51(2): 55–60.
28. Coulam C.B., Bustillo M., Soenksen D.M., Britten S. Ultrasonographic predictors of implantation after assisted reproduction. Fertil Steril. 1994 Nov; 62(5): 1004–10.
29. Son J.B., Jeong J.E., Joo J.K., Na Y.J., Kim C.W., Lee K.S. Measurement of endometrial and uterine vascularity by transvaginal ultrasonography in predicting pregnancy outcome during frozen-thawed embryo transfer cycles // J Obstet Gynaecol Res. 2014 Jun; 40(6): 1661–7.
30. Deichert U., Albrand-Thielmann C., van de Sandt M. Doppler-sonographic pelvic blood flow measurements and their prognostic value in terms of luteal phase and implantation // Hum Reprod. 1996 Aug; 11(8): 1591–3.
31. Tamura H., Takasaki A., Taniguchi K., Matsuoka A., Shimamura K., Sugino N. Changes in blood-flow impedance of the human corpus luteum throughout the luteal phase and during early pregnancy // Fertil Steril. 2008 Dec; 90(6): 2334–9.
32. Timor-Tritsch I.E., Farine D., Rosen M.G. A close look at early embryonic development with the high-frequency transvaginal transducer // American journal of obstetrics and gynecology. 1988. Т. 159, № 3. С. 676–681.
33. de Crespigny L.C., Cooper D., McKenna M. Early detection of intrauterine pregnancy with ultrasound // Journal of ultrasound in medicine. 1988. Т. 7, № 1. С. 7–10.
34. Doubilet P.M., Benson C.B. Atlas of ultrasound in obstetrics and gynecology: a multimedia reference. Lippincott Williams & Wilkins, 2003.
35. Detti L. et al. Early pregnancy ultrasound measurements and prediction of first trimester pregnancy loss: A logistic model // Scientific reports. 2020. Т. 10, № 1. С. 1–10.
36. Nyberg D.A., Laing F.C., Filly R.A. Threatened abortion: sonographic distinction of normal and abnormal gestation sacs // Radiology. 1986. Т. 158, № 2. С. 397–400.
37. Nyberg D. A. et al. Ultrasonographic differentiation of the gestational sac of early intrauterine pregnancy from the pseudogestational sac of ectopic pregnancy // Radiology. 1983. Т. 146, № 3. С. 755–759.
38. Levi C.S., Lyons E.A., Lindsay D.J. Early diagnosis of nonviable pregnancy with endovaginal US // Radiology. 1988. Т. 167, № 2. С. 383–385.
39. Dillon E.H., Feyock A.L., Taylor K.J. Pseudogestational sacs: Doppler US differentiation from normal or abnormal intrauterine pregnancies // Radiology. 1990. Т. 176, № 2. С. 359–364.
40. Kuhn P., Brizot M.L., Pandya P.P., Snijders R.J., Nicolaides K.H. Crown-rump length in chromosomally abnormal fetuses at 10 to 13 weeks’ gestation. Am J Obstet Gynecol. 1995 Jan; 172(1 Pt 1): 32–5. doi: 10.1016/0002-9378(95)90080-2. PMID: 7847557.
41. Reljic M. The significance of crown-rump length measurement for predicting adverse pregnancy outcome of threatened abortion. Ultrasound Obstet Gynecol. 2001 Jun; 17(6): 510–2. doi: 10.1046/j.1469-0705.2001.00370.x. PMID: 11422973.
42. DeVilbiss E.A., Mumford S.L., Sjaarda L.A., Connell M.T., Plowden T.C., Andriessen V.C., Perkins N.J., Hill M.J., Silver R.M., Schisterman E.F. Prediction of pregnancy loss by early first trimester ultrasound characteristics // Am J Obstet Gynecol. 2020 Aug; 223(2): 242.e1–242.e22. doi: 10.1016/j.ajog.2020.02.025. Epub 2020 Feb 25. PMID: 32109464; PMCID: PMC7994016.
43. Langman’s medical embryology. Sadler, T W (Thomas W); Langman, Jan. Medical embryology. 12th ed. / T.W. Sadler. Philadelphia: Wolters Kluwer Health/Lippincott Williams & Wilkins, c2012.
44. Papaioannou G.I. et al. Normal ranges of embryonic length, embryonic heart rate, gestational sac diameter and yolk sac diameter at 6–10 weeks // Fetal diagnosis and therapy. 2010. Т. 28, № 4. С. 207–219.
45. Lindsay D.J., Lovett I.S., Lyons E.A., Levi C.S., Zheng X.H., Holt S.C., Dashefsky S.M. Yolk sac diameter and shape at endovaginal US: predictors of pregnancy outcome in the first trimester. Radiology. 1992 Apr; 183(1): 115–8. doi: 10.1148/radiology.183.1.1549656.
46. Kurjak A., Kupesic S., Kostovic L. Vascularization of yolk sac and vitelline duct in normal pregnancies studied by transvaginal color and pulsed Doppler // J Perinat Med. 1994; 22(5): 433–40. doi: 10.1515/jpme.1994.22.5.433.
47. Kurjak A., Schulman H., Zudenigo D., Kupesic S., Kos M., Goldenberg M. Subchorionic hematomas in early pregnancy: clinical outcome and blood flow patterns. J Matern Fetal Med. 1996 Jan–Feb; 5(1): 41–4.
48. Jauniaux E., Moscoso J.G. Morphology and significance of the human yolk sac // The first twelve weeks of gestation. Springer, Berlin, Heidelberg, 1992. С. 192–213.