Intracranial computed tomography angiography (CTA)

Isabel R. Fragata, Joana N. Ramalho

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review


The prelims comprise: ct angiography (cta) is commonly used as a first vascular diagnostic tool in emergency situations, such as acute stroke and subarachnoid hemorrhage it is a fast and safe exam, but requires post-processing and skill to interpret cta is as sensitive and specific as digital subtraction angiography for diagnosis of intracranial aneurysms, to a cutoff of 3mm size. cta can help in decisions to treat acute stroke endovascularly, whenever a large vessel occlusion is found. ctv is diagnostic for cerebral sinus thrombosis, but not as specific as mrv for cerebral vein thrombosis metallic artifacts, such as coils and aneurysm clips can be a problem for image interpretation

Original languageEnglish
Title of host publicationVascular Imaging of the Central Nervous System
Subtitle of host publicationPhysical Principles, Clinical Applications and Emerging Techniques
Number of pages27
ISBN (Electronic)9781118434550
ISBN (Print)9781118188750
Publication statusPublished - 30 Nov 2013


  • Cerebral Arteriovenous Malformation
  • Cerebral venous Thrombosis
  • CTA
  • CTV
  • Stroke
  • Subarachnoid hemorrhage


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