[Anatomy of the middle cerebral artery and the angiographic image of its aneurysms].

The study is based on conclusions drawn from the microanatomical analysis of 200 middle cerebral arteries and angiographic findings in 40 aneurysms of the artery. The angiograms were analysed considering the site of the aneurysm with respect to the division of the artery at the limen insulae and presence of early temporal arteries. Correlating these data with the anatomical observations, especially with regard to the site of origin of the perforating arteries it was tried to define more strictly the facts relevant to the operation which can be obtained by angiography.