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Serial scans of the fetal brain at 16 postmenstrual weeks. (A) An extreme anterior frontal–1 section (see Table 2–2) almost tangential to the fetal skull,
showing the wide opening of the anterior fontanelle) (open arrow). (B) Frontal–2 section. The cortex and the white matter around the anterior horns are
becoming progressively thicker. The sonolucency of the anterior horn (AH) is outstanding. The subarachnoid space is marked by the white arrow. (C)
Midcoronal section. The choroid plexus (CP) and its connection through the interventricular foramina (small white arrows) are shown. The midline arrow
indicates the falx. (D) Midcoronal–3 section through the antrum of the lateral ventricles, which are filled entirely by the choroid plexus (CP). The arrow
indicates the falx. (E) Occipital–1 section. The posterior horns are marked by the small white arrows. The tentorium (t) is also indicated. (F) Horizontal
Source: NORMAL TWO- AND THREE-DIMENSIONAL NEUROSONOGRAPHY OF THE PRENATAL BRAIN, Ultrasonography of the Prenatal
section. The sonolucent cisterna magna is highlighted by the large white arrow. The cerebellum (C) and the fourth ventricle (small white arrow) are shown.
Brain, 3e
The anterior horns (F) and the inferior horns (T) are visible using this section. (G) An oblique section highlighting the choroid plexus (C) and one of the
Citation: Timor-Tritsch
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Accessed:
May
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(T). The thick mass of the brain tissue is indicated by the two small arrows.
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