Ventriculography is an invasive contrast radiological procedure in which a contrast medium or
air is introduced into the ventricular system of the brain to study the size, shape, position, and
patency of cerebral ventricles using X-ray imaging.
The brain ventricles normally contain cerebrospinal fluid (CSF), which is radiolucent (not visible
on X-ray).
By replacing part of CSF with a radiopaque contrast medium (or air in older methods), the
ventricles become visible on radiographs.
Any distortion, dilatation, displacement, or blockage can be detected.
The brain ventricles normally contain cerebrospinal fluid (CSF), which is radiolucent (not visible
on X-ray).
By replacing part of CSF with a radiopaque contrast medium (or air in older methods), the
ventricles become visible on radiographs.
Any distortion, dilatation, displacement, or blockage can be detected.
Anatomy
Brain consists of four irregular shape cavities called ventricles.
Ventricles are filled with CSF which is interstitial fluid of the brain.
Ventricles are lined by ependymal cell, which form a structure called choroid plexus.
Choroid plexus produces CSF in the ventricles.
CSF circulates with in the brain (ventricles) and spinal cord.
Ventricular system is made up of 4 Ventricles.
1. Two lateral ventricles
Lateral ventricles are a pair of large, C-shaped, cerebrospinal fluid (CSF)–filled cavities
located one in each cerebral hemisphere of the brain.
They are the largest ventricles and are the main site of CSF production due to the presence of
the choroid plexus.
2. Third Ventricle
The third ventricle is a narrow, slit-like, cerebrospinal fluid (CSF)–filled cavity located in the
midline of the brain, between the two thalami.
It receives CSF from the lateral ventricles through the interventricular foramina (Foramen of
Monro) and passes it to the fourth ventricle through the cerebral aqueduct (Aqueduct of Sylvius).
3. Fourth Ventricle