Оn the basis of these findings, the diagnosis of dissection was suggested (intravascular echoes, expansion of the arterial lumen in the V2 segment and the normal diameter of the ostium). We felt that the age of the patient and the expansion of the arterу due to the intravascular echoes essentially excluded arteritis or thrombosis of the artery.
In this case, MRI was performed to verify the diagnosis which, however, did not show intramural hematoma on T1 fat saturated sequences. But according to M. Habs, et al, signal intensities of hematoma in cervical artery dissection vary over time, and it can be normal in the acute stage1.
In the studу J. García-García vertebral arteritis is characterised by concentric, homogeneous and hypoechogenic mural thickening2. In this case, exhibited significant expression of asymmetric thickening and on certain locations of artery's lesion.
Diagnosis of dissection was finally confirmed on a repeat MRI 7 days later, which showed the presence of an intramural haematoma.