ИСТИНА

Purpose: to compare the diagnostic capabilities of MRA and HR-MRI in spontaneous intracranial dissection detecting Methods and Materials: The study included 61 patients (27 males, 31 females) with spontaneous artery dissection manifested by ischaemic stroke or isolated head or neck pain. In every time point MRI was performed on 1.5 T scanner. Data of 3D TOF MRA of the cervical and intracranial arteries and 3D spc T2 fat suppression sequence of the neck and head were obtained. Intramural haematoma (IMH), and muscle signal intensity was measured and contrast index was calculated. Results: After statistical analysis of the data with the use of non-parametric statistical methods (Mann–Whitney U test) it was revealed that value of the contrast index of IMH in 3D spc T2 fat suppression sequence was higher than that in 3D TOF MRA (р<0,05). The contrast index of IMH in intracranial and cervical artery dissection did not differ significantly in 3D spc T2 fat suppression sequence. The subjective visual analysis showed the same results. Conclusion: 3D spc T2 fat suppression sequence of the neck and head has the advantage of identifying both intracranial and cervical artery dissection before 3D TOF MRA and allows reducing the study protocol up to one sequence.