Ct is the modality of choice in defining the bony anatomy of the skull base and to depict the thin cortical margins of skull base neurovascular foramina. An interactive program for learning skull base anatomy welcome to navigating the skull base.
The coronal suture is the line where the parietal bone frontal bone and are in contact.
Ct skull base anatomy. You can however go directly to any section using the links below. B axial ct image with color coded overlay shows the skull base bones. The skull base can be evaluated by computed tomography ct which will demonstrate the bony structures of the skull base with its foramina and fissures for vessels and cranial nerves the temporal bone and sinonasal cavities.
2 superior orbital fissure. Ct is superior to mri for subtle cortical bone changes but marrow processes are best characterized with non gadolinium gd contrast enhanced t1 mri. For lesions that are completely intraosseous the mass may only be appreciated on mri figure 1.
5 internal occipital protuberance. 4 mastoid air cells. 3 anterior clinoid process.
Given that the file is large loading may take a few minutes. Basic skull base anatomy. To begin click on introduction.
Ct anatomy of skull base. Blue central skull base csb purple posterior skull base teal anterior skull base asb. Foramina of the skull base and the structures that pass through them.
Cranial foramina for further details. A axial three dimensional reconstructed ct image with color coded overlay shows the skull base sections. Ct anatomy of skull base.
Blue temporal bones fuchsia nasal bones green ethmoid bone light pink vomer purple occipital bones teal sphenoid bone yellow zygomatic bones. Basic anatomy review the bones sutures and fissures that comprise the skull base. Detailed anatomy enter this module for a more detailed review of skull base anatomy.
The base of the skull is perforated by numerous foramina which allow vessels and nerves to pass through the base of the skull allowing the intracranial cavity to communicate with the rest of the body see main article. Skull ct anatomy the sagittal suture is the line where the right and left parietal bone are in contact. A noncontrast sinus or skull base ct which covers the mastoids temporal bone and entire skull base is recommended and intravenous contrast is not usually necessary as the mri will provide soft tissue detail.
Ct is more sensitive in detecting fibro osseous skull base lesions calcification and sclerosis. The module interface is meant to mimic a radiology workstation with adjacent image scrolling via arrow keys and or mouse wheel button. Navigating the skull base identify the petro occipital fissure to navigate the major structures of the skull base.
To load the skull base ct anatomy module in a new window click on its image above. Navigating the skull base. Click the next link at the bottom of each page to step through each section.
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