Key fetal anatomy includes the choroid plexus, the septum cavum pellucidi (SCP), the lateral ventricles, and the corpus callosum. The pericallosal artery is a continuation of the anterior cerebral artery and it continues superiorly and posteriorly supplying the corpus callosum and the medial aspect of the cerebral hemisphere.

Jan 3, 2007 · Ultrasound has been used for nearly 30 years as the main modality to help diagnose fetal CNS anomalies. The scope of these guidelines is to review the technical aspects of an optimized approach to the evaluation of the fetal brain in surveys of fetal anatomy, that will be referred to in this document as a basic examination.

During this examination, doctors will take additional ultrasound images of your baby’s brain from different planes, and sometimes they may require the use of a transvaginal probe to better visualize the fetal brain anatomy. This approach allows the specialist to better visualize and classify the identified anomaly.

The basic evaluation of the fetal brain is that routinely used in the second-trimester fetal morphology scan, performed by the transabdominal approach. ... Fetal neurosonography is a diagnostic method that allows the detailed study of the fetal CNS anatomy and is indicated in situations of risk or suspicion of CNS malformations and should ...

Key fetal anatomy includes the choroid plexus, the septum cavum pellucidi (SCP), the lateral ventricles, and the corpus callosum. The pericallosal artery is a continuation of the anterior cerebral artery and it continues superiorly and posteriorly supplying the corpus callosum and the medial aspect of the cerebral hemisphere.

“Fetal brain development has been well studied, allowing for an ample knowledge of the normal changes that occur during gestation. Imaging modalities used to evaluate the fetal central nervous system (CNS) include ultrasound and MRI. MRI is the most accurate imaging modality for parenchymal evaluation and depiction of developmental CNS anomalies. The depiction of CNS abnormalities in a fetus ...

Oct 14, 2019 · The systematic detailed examination of the fetal brain in the first trimester includes the acquisition of three axial planes, ... are often associated with abnormal brain anatomy that can be detected in the axial or sagittal views of the fetal head (Figs. 8.19, 8.20, 8.21 and 8.22). The larger the encephalocele, the more brain abnormality is ...

The depiction of CNS abnormalities in a fetus can only be accurately made when there is an understanding of its normal development. This article reviews the expected normal fetal brain anatomy and development during gestation. Additional anatomic structures seen on brain imaging sequences are also reviewed."

Feb 1, 2019 · The major part of this section is a pictorial review of cross-sectional fetal brain anatomy using magnetic resonance (MR) imaging matched as closely as possible with postmortem histologic sections. It should be appreciated that by the time the fetal brain has reached 19 to 20 weeks (the earliest fetal images shown in this text), all of the ...

Fig. 1. Axial ssFSE sequences of 4 different normal fetuses demonstrating the expected changes in fetal brain parenchymal growth and formation during the second and third trimester of pregnancy. (A) A 16-week-old fetus, (B) 20-week-old fetus, (C) 26-week-old fetus, and (D) 35-week-old fetus. Fetal Brain Anatomy 665