Ventricular system

The ventricular system consists of:
• two lateral ventricles
• the third ventricle
• the fourth ventricle.

The lateral ventricle communicates with the third ventricle by the interventricular foramen or foramen of Monro.

The third ventricle is in communication with the fourth ventricle through the cerebral aqueduct.

The fourth ventricle is related to the subarachnoid space via the side openings (Foramen of Luschka) and the median opening (Foramen of Magendie).

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Level 1. Image 1. MRI of brain (magnification), sagittal T1-weighted image.  1, Lateral ventricle. 2, Splenium of corpus callosum. 3, Pons. 4, Cerebellum.

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• Level 1. Image 1. MRI of brain (magnification), sagittal T1-weighted image.  1, Lateral ventricle. 2, Splenium of corpus callosum. 3, Pons. 4, Cerebellum.
• Level 1. Image 2. MRI of brain (magnification), axial T1-weighted image.  1, Lateral ventricle. 2, Corpus callosum. 3, Caudatus nucleus.
• Level 1. Image 3. MRI of brain (magnification), coronal T1-weighted image.  1, Lateral ventricle. 2, Corpus callosum. 3, Cingulate gyrus. 4, Temporal lobe.
• Level 2. Image 1. MRI of brain (magnification), sagittal T1-weighted image.  1, Interventricular foramen (Foramen of Monro) . 2, Corpus callosum. 3, Pons. 4, Cerebellum.
• Level 2. Image 2. MRI of brain (magnification), axial T1-weighted image.  1, Interventricular foramen (Foramen of Monro) . 2, Thalamus. 3, Lenticular nucleus. 4, Caudatus nucleus.
• Level 2. Image 3. MRI of brain (magnification), coronal T1-weighted image.  1, Interventricular foramen (Foramen of Monro) . 2, Corpus callosum. 3, Lenticular nucleus. 4, Temporal lobe.
• Level 3. Image 1. MRI of brain (magnification), sagittal T1-weighted image.  1, Third ventricle. 2, Fornix. 3, Splenium of corpus callosum. 4, Pons. 5, Cerebellum.
• Level 3. Image 2. MRI of brain (magnification), axial T1-weighted image.  1, Third ventricle. 2, Thalamus. 3, Lenticular nucleus. 4, Caudatus nucleus.
• Level 3. Image 3. MRI of brain (magnification), coronal T1-weighted image.  1, Third ventricle. 2, Lenticular nucleus. 3, Caudatus nucleus. 4, Corpus callosum.
• Level 4. Image 1. MRI of brain (magnification), sagittal T1-weighted image.  1, Cerebral aqueduct. 2, Corpus callosum. 3, Pons. 4, Cerebellum.
• Level 4. Image 2. MRI of brain (magnification), axial T1-weighted image.  1, Cerebral aqueduct. 2, Temporal lobe (Right side). 3, Globe.
• Level 4. Image 3. MRI of brain (magnification), coronal T1-weighted image.  1, Cerebral aqueduct. 2, Cerebellum. 3, Temporal lobe (right side). 4, Corpus callosum.
• Level 5 (last level). Image 1. MRI of brain (magnification), sagittal T1-weighted image.  1, Fourth ventricle. 2, Splenium of corpus callosum. 3, Pons. 4, Cerebellum.
• Level 5 (last level). Image 2. MRI of brain (magnification), axial T1-weighted image.  1, Fourth ventricle. 2, Cerebellar hemisphere. A, Anterior. P, Posterior.
• Level 5 (last level). Image 3. MRI of brain (magnification), coronal T1-weighted image.  1, Fourth ventricle. 2, Cerebellum. 3, Corpus callosum. 4, Cingulate gyrus.

Reference

• Harnsberger HR, Osborn AG, Ross JS, Moore KR, Salzman KL, Carrasco CR, Halmiton BE, Davidson HC, Wiggins RH. Diagnostic and Surgical Imaging Anatomy: Brain, Head and Neck, Spine. 3rd ed. Salt Lake City, Utah. Amirsys. 2007.
• Bourjat P, Veillon F. Imagerie radiologique tête et cou. Paris, Vigot. 1995.
• Gouazé A, Baumann JA, Dhem A. Sobota. Atlas d'Anatomie humaine. Tome 3. Système nerveux central, système nerveux autonome, organe des sens et peau, vaisseaux et nerfs périphériques. 1er éd. Paris, Maloine. 1977.
• Kahle W, Cabrol C. Anatomie. Tome 3: Système nerveux et organe des sens. 1er éd. Paris, Flammarion. 1979.