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TABLE 2: 
Locations of aneurysms
LocationNumber
Anterior circulation37
 Ophthalmic artery2
 Paraclinoid internal carotid artery3
 Posterior communicating artery7
 Anterior choroidal artery2
 Internal carotid bifurcation1
 Anterior communicating artery19
 Middle cerebral bifurcation3
Posterior circulation46
 Basilar caput34
 Posterior cerebral artery1
 Superior cerebellar artery2
 Basilar trunk2
 Vertebrobasilar junction4
 Posterior inferior cerebellar artery3