Comparison of MRA and CTA in the diagnosis of intracranial aneurysms

Objective To evaluate the role of magnetic resonance angiography(MRA)and computed tomography angiography(CTA)in the diagnosis of intracranial aneurysm.Methods This retrospective analysis enrolled 47patients with intracranial aneurysms approved by digital subtraction angiography(DSA)in which findings were used as the gold standard. The intracranial aneurysm detection rate and tumor size were compared according to MRA and CTA image data.And then MRA and CTA advantages and disadvantages were discussed in the diagnosis of intracranial aneurysms.Results Among the 47patients,there were 52intracranial aneurysms diagnosed by DSA.Forty-six aneurysms were detected by MRA among 42patients.The positive rate was 88.5%(46/52).Forty-nine aneurysms were detected by CTA among 44patients.The positive rate was 94.2%(49/52).There was no significant difference in the detection rate(P=0.49).MRA showed that the tumor diameter was 5~23mm,average(9.72±5.68)mm;CTA displayed that the diameter of tumor was 3~25mm,average(9.85±5.81)mm;there was no significant difference in tumor diameter(P=0.17).Conclusion MRA and CTA had no significant difference in the diagnosis of intracranial aneurysms,and the clinic can select the appropriate inspection methods according to the actual conditions to achieve the best diagnosis and treatment purposes.