Retrospective comparison of different in intracranial aneurysms with different magnetic resonance angiography techniques with endovascular treatment

Intracranial aneurysms are the most common cause of non-traumatic subarachnoid hemorrhage. Surgical or endovascular treatment is one of the preferred methods for the treatment of intracranial aneurysms. Coil or stent treatment is the main treatment modality for endovascular treatment. In order to follow the possible recurrence-residues of treated aneurysms, DSA or MRA examination is usually performed. While DSA is the gold standard method, MRA, which is less invasive, is frequently preferred. In our study, 113 aneurysms were evaluated in 90 patients treated endovascularly. 66 cases is assessed with 3 T MR and 47 cases is assessed with 1,5 T MR. According to Raymond classification in 3 T and 1,5 T MR, the occlusion rates are compared with each other. THRIVE, TOF-MRA, CE-MRA were performed on 3 T MR. 1,5 T MR was performed with TOF-MRA and K-MRA. According to kappa analysis between THRIVE and CE-MRA, compliance was observed in a total of 61 cases and 92,42% was found to be compatible and a perfect fit was observed according to the kappa values (0,800) (p <0,001). In 3 T MR, 48 complete occlusion (class 1), 18 residual flow (class 2,3) in K-MRA, 57 complete occlusion 9 in TOF-MRA were evaluated as residual flow. 3 T MR showed a statistically significant difference between TOF and CE-MRA (p <0,05). In 1,5 T MRI, 36 cases were evaluated as complete occlusion and 11 as residual flow in K-MRA. In TOF-MRA, 40 cases were evaluated as complete occlusion and 7 cases as residual flow and no statistically significant difference was found between the sequences (p = 0,125).