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  2. 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

  3. 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 .

  4. 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 ...

  5. Occipital bone - Wikipedia

    en.wikipedia.org/wiki/Occipital_bone

    At the base of the skull in the occipital bone, there is a large oval opening called the foramen magnum, which allows the passage of the spinal cord. Like the other cranial bones, it is classed as a flat bone. Due to its many attachments and features, the occipital bone is described in terms of separate parts.

  6. Basilar skull fracture - Wikipedia

    en.wikipedia.org/wiki/Basilar_skull_fracture

    A basilar skull fracture as seen on CT Diagram showing bones that may be involved in a basilar skull fracture. Basilar skull fractures include breaks in the posterior skull base or anterior skull base. The former involve the occipital bone, temporal bone, and portions of the sphenoid bone; the latter, superior portions of the sphenoid and ...

  7. 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 ...

  8. Atlanto-occipital dislocation - Wikipedia

    en.wikipedia.org/wiki/Atlanto-occipital_dislocation

    The injury is a result of disruption of the stabilizing ligaments between the occiput, or posterior skull base, and the C1 vertebral body, otherwise known as the atlas. The diagnosis is usually suspected by history and physical exam, but confirmed by imaging, typically by CT due to its faster speed in the acute trauma setting, although MRI can ...

  9. 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

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