Necessity of cerebral angiography in thunderclap headache patients who show no evidence of subarachnoid hemorrhage: investigation of 350 cases
Takeuchi, T.; Kasahara, E.; Iwasaki, M.; Higuchi, M.; Kojima, S.
No Shinkei Geka. Neurological Surgery 22(10): 925-931
1994
ISSN/ISBN: 0301-2603 PMID: 7969758 Document Number: 436414
Purpose: The necessity of cerebral angiography was assessed in patients with thunderclap headache in whom subarachnoid hemorrhage had been ruled out on CT findings and the color of cerebrospinal fluid (CSF). Subjects and Methods: The subjects of this study were 350 patients with thunderclap headache in whom subarachnoid hemorrhage was ruled out at our clinic based on CT findings and the color of CSF. The time span from the onset of thunderclap headache to the first visit to our clinic ranged from 1 to 9 days (mean: 2.5 days). The ages of the patients ranged from 22 to 64 years. 147 were male and 203 female. All patients underwent CT angiography. Percutaneous cerebral angiography was also performed in cases in which cerebral aneurysms were suspected on CT angiography