[Three-dimensional CT angiography of central nervous system]

Three-dimensional CT angiography (3 D-CTA) has become a modality of choice for the evaluation of the lesions and diseases of central nervous system. Further enhancement of diagnostic capability has been achieved by the development and introduction of multislice CT, which enabled us to obtain true isotrophic volumetric data. Most proven application of 3 D-CTA in CNS is the diagnosis and management of cerebral aneurysms. It can be used as an alternative to conventional angiography in most of cases. Other promising applications of 3 D-CTA are, pre-surgical evaluation of arteriovenous malformations, diagnosis of ischemic diseases, and evaluation of neck artery.