[en] New imaging modalities permit detailed knowledge of the anatomy of cerebral arteriovenous malformations. Magnetic resonance imaging (MRI) provides morphological data, size and tomography of the nidus, anatomic relationship, as well as dynamic information particularly with the use of MR angiography. Selective and hyper-selective cerebral angiography provide information the angio-architecture and search for associated vascular abnormalities such as aneurysms. It is therefore possible to distinguish malformations associated with a high risk of hemorrhage and to define the indications of radiosurgery. (authors)

[en] Imaging plays a considerable role in the diagnosis and pretherapeutic assessment of intracerebral arteriovenous malformations. CT studies allow detection of most of angiomas and of recent hemorrhage. MRI is most sensitive than CT in determining precise location of the lesions and in detecting associated parenchymal abnormalities, especially subacute hemorrhage. Angiography remains the gold standard for the study of the angioarchitecture, the appreciation of the effects on the safe brain vascularisation and the detection of the associated vascular lesions. (authors). 70 refs., 9 figs