PMC3389954_01
CT angiography revealed a lack of contrast enhancement in the left internal carotid artery and the right vertebral artery.
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CT angiography of cephalad arteries (from the level of the aortic arch to the level of the circle of Willis) showed an 18-mm-long section with absence of contrast enhancement in C1 segment of the left internal carotid artery (slit-like lumen in that section), which could correspond to parietal thrombus or dissection (Figures 1, 2).
Reconstructed image of the left common carotid artery and the left internal carotid artery with a lack of contrast enhancement.
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CT angiography of cephalad arteries (from the level of the aortic arch to the level of the circle of Willis) showed an 18-mm-long section with absence of contrast enhancement in C1 segment of the left internal carotid artery (slit-like lumen in that section), which could correspond to parietal thrombus or dissection (Figures 1, 2).
TOF MRA revealed a dissection within the common and internal carotid arteries.
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No features of stroke were found within the brain stem (FLAIR (ax) and T2-weighted (sag).
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Follow-up CT angiography after 6 months revealed normal contrast enhancement of left carotid artery and features of residual dissection within the right vertebral artery.
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The remaining part (previously dissected) demonstrated normal blood flow in the entire vessel diameter (Figure 5).