PMC4718281_01
(A) Brain CT images at onset show a subarachnoid hemorrhage and intraventricular hemorrhage and hydrocephalus. (B) Brain MR images at 2 months after onset show a leukomalactic lesion in both fronto-parietal lobes. (C) Results of diffusion tensor tractography (DTT) for both lower dorsal and ventral ascending reticular activating system (ARAS). On 2-month DTT, narrowing (arrows) of both lower dorsal and ventral ARASs was observed on both sides: in particular, among 4 neural tracts of the lower ARAS, the right lower ventral ARAS was narrowest. By contrast, on 24-month DTT, the 4 narrowed neural tracts of both lower dorsal and ventral ARASs were thickened compared with those of 2-month DTT (arrows). (D) DTTs of the lower dorsal and ventral lower ARAS of a normal subject (65-year-old woman). ARAS = ascending reticular activating system, CT = computed tomography, DTT = diffusion tensor tractography, MR = magnetic resonance.
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F1
A 70-year-old female patient underwent coiling of the left ruptured posterior communicating artery after subarachnoid hemorrhage and both extraventricular drainage for management of intraventricular hemorrhage and hydrocephalus at the neurosurgery department of a university hospital (Figure 1A).