An automatic detection method of cerebral aneurysms in time-of-flight magnetic resonance angiography images based on attention 3D U-Net

•Early detection of cerebral aneurysms can prevent cerebral hemorrhage.•Magnetic resonance angiography, the only non-invasive technique to detect aneurysms.•Deep learning can help doctors detect aneurysms faster and more accurately.•Existing methods have a high false positive rate and rely on large amounts of data.•The proposed method obtained high sensitivity with low false positive rate.•This article is the first to apply 3D U-Net related methods in aneurysm detection.