Comparison study of magnetic resonance angiography,CT angiography with digital subtraction angiography in intracranial aneurysm diagnosis

Objective To study the value of magnetic resonance angiography(MRA),CT angiography(CTA) and digital subtraction angiography(DSA) in intracranial aneurysm diagnosis through a comparison method.Methods The study enrolled 34 patients with intracranial aneurysm approved by DSA and(or) clinical method.All patients underwent DSA examination,and simultaneously underwent MRA and(or) CTA examination.The detection rates of intracranial aneurysm MRA,CTA and DSA were analyzed,and the morphological characteristics of the aneurysm were explored.The body diameter of aneurysm and neck width of saccular aneurysm were measured.Results 41 intracranial aneurysms were detected among the 34 patients.The detection rates of DSA,MRA and CTA were respectively 97.6%(40/41),86.4%(19/22) and 75.0%(15/20).Taking DSA as golden standard,the difference of detection rates between MRA and CTA had no statistical significance(P0.05).The differences of the aneurysms' body diameters and neck width of saccular aneurysm had no statistical significances between CTA and DSA,or between MRA and CTA(P0.05).Conclusion DSA is still the most susceptible method in detection of intracranial aneurysms.The displays of morphological characteristics had no differences between MRA,CTA and DSA.Because of non-surgical,cheaper,quicker and more convenient features,we should firstly choose MRA and CTA examination,and especially MRA examination with no introduction of contrast medium making the process safer.