A standard set of views is taken to assist with consistent visualisation of
structures and in the interpretation of possible abnormalities.
The ultrasound takes a "slice" through the structure, resulting in a 2D image
of a 3D structure. It is therefore important to understand the
relationship of the anatomy to the image provided.
Images below detail the standard set of images taken. The accompanying
images are from a 30 week infant with normal appearing anatomy.
Images are usually taken through the anterior fontanelle. The posterior
fontanelle can be used if needed, and axial images are occasionally taken
through the temporal bone.
In the coronal plane, a series of images are taken through the frontal
lobes, more posteriorly through the ventricles and thalami, then along
the plane of the choroid plexus, then superior to that.
The sagittal images are initially taken in the midline, with images
then taken on both sides at the level of the lateral ventricles then
periventricular areas. For the purposes of conserving space on
this page, the left sagittal images have been omitted.
(Diagrams modified from
Rennie JM. Neonatal cerebral ultrasound. Cambridge University
Press (1997). Used with permission from the author.
Additional images are taken according to clinical need.
Click on the thumbnail images for a
Click on the thumbnail images for
a larger image
This identifies useful landmarks. The cerebellar vermis shows
up as an echogenic image in the posterior fossa. The 4th ventricle
sits in front of this. The cisterna magna sits below the
cerebellar vermis and is not very echogenic. The corpus callosum
is seen sweeping from anterior to posterior with teh cingulate gyrus
above and parallel to it. The parieto-occipital sulcus is seen
well above the posterior fossa.
The shape of the lateral ventricle is the key landmark for this view.
The caudate nucleus lies below the floor of the frontal horn of the
lateral ventricle; the thalamus lies behind and below it. The
occipital horn of the lateral ventricle is filled with choroid plexus.
The choroid tucks up in the caudothalamic groove in the floor of the
lateral ventricle and may be echogenic.
Further angulation of the transducer laterally results in a section
lateral to the lateral ventricles. The Sylvian fissure is the key
landmark in this view.