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On CT angiograms,the observers detected 73 and 70 of 75 symptomatic aneurysms;96%of the detected aneurysms were classified as definitely present.Of 16 incidental aneurysms,12 and 10 were detected by the observers.With adequate CT angiographic quality,parent artery side of anterior communicating aneurysms was correctly predicted in 100%(95% confidence interval[CI]:87%,100%).Neurosurgeons assessed CT angiography as equal or superior to DSA in 83%(95%CI:73%,90%)of 87 aneurysms,and in 74% (95%CI:63%,82%)operation might have been based on CT angiographic findings alone.CT angiography depicted 90%of all aneurysms,and 90%were classified as definitely present.CT angiography must be of high quality with adequate depiction of the aneurysm and the parent artery for surgery to be performed on the basis of CT angiographic findings alone. |
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aneurysm
aneurysm,intracranial
aneurysm,intracranial,treatment of
carotid angiogram
CAT scan
CAT scan,angiography
foot drop
MRI,CAT scan compared to
subarachnoid hemorrhage
treatment of neurologic disorder
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