title: Dual-energy CT angiography for the diagnosis of intracranial dural arteriovenous fistula.
abstract: OBJECTIVE
  To investigate the clinical utility of dual-source dual-energy CT angiography (DSDECTA) for diagnosing intracranial dural arteriovenous fistula (DAVF).
  
  
  METHODS
  Nine intracranial DAVF patients were examined using Siemens DSDECTA and cerebral digital subtraction angiography (DSA). Imaging data were retrospectively analyzed to evaluate the concordance between the imaging modalities.
  
  
  RESULTS
  DSDECTA examination showed that the blood-supplying arteries were thickened and the draining veins and dural sinuses were expanded in all 9 patients. The presence and characteristics of intracranial DAVF were confirmed using DSA. Head CT showed subarachnoid hemorrhage in 4 cases and intracerebral hematoma in 3 cases.
  
  
  CONCLUSIONS
  Although DSA is the gold standard for DAVF diagnosis, DSDECTA is less invasive and more suitable for revealing the three-dimensional structure of secondary intracranial lesions as well as other DAVF characteristics. Thus, DSDECTA may be a new alternative for noninvasive screening of suspected DAVF patients before interventional embolization and surgical resection.
authors.affiliation: Department of Radiology, Guangzhou General Hospital of Guangzhou Command of PLA Guangzhou 510010, China.
authors.forename: Yuanxing
authors.initials: Y
authors.lastname: Guo
authors.affiliation: Department of Radiology, Guangzhou General Hospital of Guangzhou Command of PLA Guangzhou 510010, China.
authors.forename: Shan-Xing
authors.initials: SX
authors.lastname: Ou
authors.affiliation: Department of Radiology, Guangzhou General Hospital of Guangzhou Command of PLA Guangzhou 510010, China.
authors.forename: Min
authors.initials: M
authors.lastname: Qian
authors.affiliation: Department of Radiology, Guangzhou General Hospital of Guangzhou Command of PLA Guangzhou 510010, China.
authors.forename: Xiaotao
authors.initials: X
authors.lastname: Zeng
authors.affiliation: School of Automation Science and Engineering, South China University of Technology Guangzhou 510010, China.
authors.forename: Bin
authors.initials: B
authors.lastname: Li
keywords: Dural arteriovenous fistula; digital subtraction angiography; dual-source dual-energy CT angiography; intracerebral hematoma; subarachnoid hemorrhage