By underscoring the causes of the condition, however, health bodies hope to prevent the onset of a rupture by encouraging at-risk patients to get screening tests.
For the first time last year, researchers found an association between variations in the size of the brain’s artery and the likelihood of an aneurysm.
Imaging tests of 145 patients revealed that patients with asymmetric brain arteries had a significantly higher chance of developing an aneurysm.
Doctor Burlakoti, from the University of South Australia, said: “A lot of small, unruptured aneurysms go undetected in commonly used imaging techniques.
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