No shinkei geka. Neurological surgery
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Clinical use of four-vessels angiography increased the frequency of detection of intracranial aneurysm in patients who had episode of subarachnoid hemorrhage. However, some cases of subarachnoid hemorrhage did not show intracranial and intraspinal source of bleeding angiographically. Bjökesten and Troupp pointed out that some cases who were negative in angiography may have a very small intracranial aneurysm. ⋯ In the case who showed questionable shadow as miliary intracranial aneurysm, the repeated angiography under modified direction of X-ray and modified head position of patient is required. The magnification cerebral angiography of three fold is also useful in diagnosis of miliary intracranial aneurysm. The intracranial treatment of miliary intracranial aneurysms were done by coating except one case whose aneurysm was clipped.