Sulcus, Gyrus, Interhemispheric fissure

Gyrus (plural gyri) is a ridge on the cerebral cortex.

Sulcus (plural sulci) is a groove that separates gyri.

The cerebral hemispheres are separated by a median cleft: the inherhemispheric fissure (great longitudinal fissure). The falx cerebri (cerebral falx) is a fold of dura mater which lies within inherhemispheric fissure

Image 1. MRI of the brain, T1-weighted coronal view.
1, Sulcus. 2, Gyrus. 3, Falx cerebri. 4, Temporal lobe (left side). 5, Temporal lobe (right side).

  • Image 1. MRI of the brain, T1-weighted coronal view.
    1, Sulcus. 2, Gyrus. 3, Falx cerebri. 4, Temporal lobe (left side). 5, Temporal lobe (right side).

  • Image 2. MRI of the brain, T1-weighted coronal view.
    1, Gyrus. 2, Sulcus. 3, Longitudinal cerebral fissure 4, Temporal lobe (left side). 5, Temporal lobe (right side).

  • Image 3. MRI of the brain, T2-weighted coronal view.
    1, Gyrus. 2, Sulcus. 3, Longitudinal cerebral fissure 4, Temporal lobe (left side). 5, Temporal lobe (right side).

  • Image 4. MRI of the brain, T1-weighted coronal view.
    1, tentorium cerebelli. 2, Gyrus. 3, Sulcus. 4, Cerebellum.

  • Image 5. MRI of the brain, T2-weighted coronal view.
    1, Gyrus. 2, Sulcus. 3, tentorium cerebelli. 4, Cerebellum.

  • Image 6 of 6. MRI of the brain, T1-weighted sagittal view.
    1, Occipital lobe. 2, tentorium cerebelli. 3, Cerebellum. 4, Midbrain.

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.

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