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  Indian J Med Microbiol
 

Figure 3: Ascending segment of the internal carotid artery in the cavernous sinus. (a) Axial computed tomography angiography image: The start of the vidian canal (posterior end of the canal) at the level of the junction of horizontal petrous and ascending cavernous internal carotid artery segments (arrow). (b) Axial computed tomography angiography image: The relation of the ascending segment of the internal carotid artery in the posterior cavernous sinus projecting medially into the sphenoid sinus shown on the left side (orange arrow) and running along the side of the clivus shown on the right side (green arrow)

Figure 3: Ascending segment of the internal carotid artery in the cavernous sinus. (a) Axial computed tomography angiography image: The start of the vidian canal (posterior end of the canal) at the level of the junction of horizontal petrous and ascending cavernous internal carotid artery segments (arrow). (b) Axial computed tomography angiography image: The relation of the ascending segment of the internal carotid artery in the posterior cavernous sinus projecting medially into the sphenoid sinus shown on the left side (orange arrow) and running along the side of the clivus shown on the right side (green arrow)