Quadrigeminal cistern

Cerebrospinal fluid-filled space in the brain

The quadrigeminal cistern, also known as the cistern of the great cerebral vein, is a cerebrospinal fluid (CSF)-filled space located in the brain. It is part of the subarachnoid space and is situated posterior to the midbrain and superior to the cerebellum. This cistern is named for its proximity to the quadrigeminal plate, which consists of the superior colliculi and inferior colliculi.

Anatomy

The quadrigeminal cistern is bordered anteriorly by the tectum of the midbrain, posteriorly by the splenium of the corpus callosum, and inferiorly by the cerebellum. It is continuous with the ambient cistern laterally and the superior cistern superiorly. The great cerebral vein (also known as the vein of Galen) and the pineal gland are notable structures found within this cistern.

Function

The primary function of the quadrigeminal cistern is to act as a reservoir for cerebrospinal fluid, which cushions and protects the brain and spinal cord. It also serves as a conduit for the passage of CSF between different parts of the brain.

Clinical Significance

The quadrigeminal cistern can be involved in various pathological conditions. For instance, arachnoid cysts or tumors in this region can lead to compression of adjacent structures, resulting in neurological deficits. Additionally, subarachnoid hemorrhage can lead to the accumulation of blood within this cistern, which can be detected through imaging studies such as CT scans or MRIs.

Imaging

The quadrigeminal cistern is often evaluated using neuroimaging techniques. On MRI scans, it appears as a CSF-filled space and can be visualized in various planes. CT scans can also be used to assess this cistern, particularly in the context of acute hemorrhage.

Related Pages

• Subarachnoid space
• Cerebrospinal fluid
• Midbrain
• Cerebellum
• Superior colliculus
• Inferior colliculus
• Great cerebral vein
• Pineal gland
• Arachnoid cyst
• Subarachnoid hemorrhage
• CT scan
• MRI