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Embryological evaluation of surface features of human embryos and early fetuses by 3‐D ultrasound
Author(s) -
Yonemoto Hisashi,
Yoshida Koyo,
Kinoshita Katsuyuki,
Takeuchi Hisaya
Publication year - 2002
Publication title -
journal of obstetrics and gynaecology research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.597
H-Index - 50
eISSN - 1447-0756
pISSN - 1341-8076
DOI - 10.1046/j.1341-8076.2002.00043.x
Subject(s) - medicine , ultrasound , embryo , fetus , anatomy , gestation , 3d ultrasound , trunk , pregnancy , andrology , radiology , biology , ecology , genetics , microbiology and biotechnology
AbstractObjective: To visualize embryonal and early fetal surface features using transvaginal (3‐D) ultrasound.Methods: Seventy patients at 5–11 weeks of gestation (10 at each week) were studied.Results: 3‐D ultrasound could visualize the surface morphology, showing its clinical applicability. From 5 to 6 weeks the embryo was observed in the shape of a ‘C’ in 70% of all embryos. At 7 weeks, the head could be distinguished from the trunk in all embryos. Until 9 weeks, the four extremities were observed in all fetuses and the formation of midgut herniation in 80%. From 10 to 11 weeks, the visualization rates of the ears, orbits and fingers were 40%, 30% and 40%, respectively.Conclusion: 3‐D ultrasound is useful to recognize the surface morphology of embryos and early fetuses.