ABSTRACT
An investigation of real time sonographic features of the normal fetal brain at six
levels in the axial plain was undertaken between the 26th and 40th week of gestation.
Structures such as cerebrum, midbrain, basal ganglia, ventricular system, vascular
system, and cerebellum can be routinely identified if ultrasound is performed systematically.
The sonographic appearance of detailed brain anatomy at each level is presented with
the hope that it may provide a systematic form of scanning the fetal brain. With such
standardization of technique many erroneous interpretations may possibly be avoided.
