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Fig. 5 | SpringerPlus

Fig. 5

From: Brain stem herniation secondary to cerebrospinal fluid drainage in ruptured aneurysm surgery: a case report

Fig. 5

Schema of the sag ratio calculated with a maximal AP diameter and b maximal bipeduncular diameter at the level of midbrain (a). Axial CT scan performed before surgery, Day 3, 5 and 7 after operation (b–d). The sag ratio of each was 0.80, 0.99, 1.18 and 0.95, respectively. CT scan on post-operative Day 5 (c) showed effacement of the sylvian and prepontine cisterns as well as an elongated midbrain

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