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  2. Computed tomography of the head - Wikipedia

    en.wikipedia.org/wiki/Computed_tomography_of_the...

    Special views focusing on the orbit of the eye may be taken to investigate concerns relating to the eye. [8] CT scans are used by physicians specializing in treating the eye (ophthalmologists) to detect foreign bodies (especially metallic objects), fractures, abscesses, cellulitis, sinusitis, bleeding within the skull (intracranial bleeding), proptosis, Graves disease changes in the eye, and ...

  3. Base of skull - Wikipedia

    en.wikipedia.org/wiki/Base_of_skull

    The base of skull, also known as the cranial base or the cranial floor, is the most inferior area of the skull. It is composed of the endocranium and the lower parts of the calvaria . Structure

  4. Reid's base line - Wikipedia

    en.wikipedia.org/wiki/Reid's_base_line

    Reid's base line is used as the zero plane in computed tomography. Paediatric base line is an anatomic line that maintains a fixed relation to facial bones throughout the period of growth. In 1962, the World Federation of Radiology defined it as the line between the infraorbital margin and the upper margin of the external auditory meatus .

  5. Clivus (anatomy) - Wikipedia

    en.wikipedia.org/wiki/Clivus_(anatomy)

    The clivus (/ ˈ k l aɪ v ə s /, [1] Latin for "slope") or Blumenbach clivus is a part of the occipital bone at the base of the skull. [2] It is a shallow depression behind the dorsum sellae of the sphenoid bone. It slopes gradually to the anterior part of the basilar occipital bone at its junction with the sphenoid bone. It extends to the ...

  6. Middle cranial fossa - Wikipedia

    en.wikipedia.org/wiki/Middle_cranial_fossa

    Superior view of the skull base. Middle cranial fossa shown in green. 1: Sphenoidal limbus (anterior margin of the chiasmatic groove) 2: Posterior borders of the lesser wings of the sphenoid 3: Dorsum sellae of the sphenoid bone. 4: Superior borders of the petrous part of the temporal bone

  7. Posterior cranial fossa - Wikipedia

    en.wikipedia.org/wiki/Posterior_cranial_fossa

    Superior view of the skull base. posterior cranial fossa shown in green. 1: Dorsum sellae of the sphenoid bone 2: Superior borders of the petrous part of the temporal bone. 3: Groove for transverse sinus of the occipital bone

  8. Endocranium - Wikipedia

    en.wikipedia.org/wiki/Endocranium

    While the endocranium is an integral part of the skull in mammals, birds and reptiles, its connection to the roofing parts of the skull is more loose in the lower vertebrates. In Agnathans and Chondrichthyes, the skull lacks the skull roof dermal elements, their whole cranium being composed of the endocranium, properly called a chondrocranium.

  9. Anterior cranial fossa - Wikipedia

    en.wikipedia.org/wiki/Anterior_cranial_fossa

    The anterior cranial fossa is a depression in the floor of the cranial base which houses the projecting frontal lobes of the brain. It is formed by the orbital plates of the frontal, the cribriform plate of the ethmoid, and the small wings and front part of the body of the sphenoid; it is limited behind by the posterior borders of the small wings of the sphenoid and by the anterior margin of ...

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