ct angiography has sensitivities of 77% to 97% and specificities of 87% to 100% for picking up an aneurysm. mr angio sensitivity and specificities are way less than ct angio. so when ct angio is negative for an aneurysm it is good news. even more important to know is that with level 1 evidence the 1 or 2 mm aneurysm does not require intervention when they are unruptured and patient is under 36 non-smoker not hypertensive or with negative family history of aneurysms. i assume that you are not a smoker or hypertensive as you have not mentioned anything about that. take care. for further information consult a neurologist online --> <link>
either mr angio or ct angio which will show brain aneurysm clearly?