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 Indian J Med Microbiol  
 

Figure 2 (A-C): Axial time-of-flight (TOF) MRI image (A) shows absence of flow (arrow) in the right cavernous carotid artery. Note the normal flow in the left carotid artery (arrowhead). Axial susceptibility-weighted MRI image (B) shows susceptibility artifacts (arrow) in the right cavernous carotid aneurysm. Lateral view of a digital subtraction angiogram (C) demonstrates the 'string sign' (arrowhead) in the cervical ICA, with occlusion of the internal carotid artery 1.5 cm distal to its origin (arrow), and nonfilling of the aneurysm. The ipsilateral ophthalmic artery (long arrow) is filling through the middle meningeal artery (double arrow)

Figure 2 (A-C): Axial time-of-flight (TOF) MRI image (A) shows absence of flow (arrow) in the right cavernous carotid artery. Note the normal flow in the left carotid artery (arrowhead). Axial susceptibility-weighted MRI image (B) shows susceptibility artifacts (arrow) in the right cavernous carotid aneurysm. Lateral view of a digital subtraction angiogram (C) demonstrates the 'string sign' (arrowhead) in the cervical ICA, with occlusion of the internal carotid artery 1.5 cm distal to its origin (arrow), and nonfilling of the aneurysm. The ipsilateral ophthalmic artery (long arrow) is filling through the middle meningeal artery (double arrow)