Figure 3
From: Asymmetrical middle cerebral artery bifurcations are more vulnerable to aneurysm formation
Box plots display significant differences in the mean value of angles (φ1, φ2 and φ3), vessel diameters (D1, D2 and D3), and adjusted ROC curves analysis of bifurcation angle (φ1, φ2 and φ3) and vessel diameter (D1 and D2) for predicting aneurysm presence. Total AN, patients with middle cerebral artery (MCA) bifurcation aneurysms; Normal, control subjects with no aneurysms; φ1, the angle formed between two M2 segments; φ2 and φ3 indicate the smaller and larger angles formed between M1 and one M2 segment of MCA, respectively. D1, the diameter of M1; D2 and D3, the diameter of the smaller and larger M2 segments, respectively. AUC, area under the curve. Differences were considered statistically significant at P < 0.05.
