Should the frontal bone be visualized in midline sagittal views of the facial profile to assess the fetal nasal bones during the first trimester?
Gonçalves
L F
LF
Espinoza
J
J
Lee
W
W
Romero
R
R
D004314:Down Syndrome / Q000000981:diagnostic imaging*; D005260:Female; D005315:Fetal Diseases / Q000000981:diagnostic imaging*; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods; D009295:Nasal Bone / Q000000981:diagnostic imaging*; D011247:Pregnancy; D016216:Ultrasonography, Prenatal / Q000379:methods*