PMID: 6965548Feb 1, 1980Paper

Intraventricular extension of a ruptured basilar artery aneurysm

Surgical Neurology
G W TysonJ A Jane

Abstract

Penetration of the floor of the third ventricle by a saccular basilar bifurcation aneurysm accounted for a primary intraventricular hemorrhage in a 75-year-old women. This unusual relationship between the aneurysm and the third ventricle was clearly demonstrated by a computed tomographic (CT) scan only after the interface between the aneurysm and the ventricle was projected in a plane parallel to the ventricular floor. The CT scan interpretation was corroborated by an autopsy study. The principle of varying the plane of projection in order to obtain optimum delineation of the relationships of an aneurysm is well established in angiography, but has not previously been reported in the study of aneurysms by CT scan.

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