title: Dual-energy CT of the brain and intracranial vessels.
abstract: OBJECTIVE
  The purpose of this review is to summarize the principles and applications of dual-energy CT in evaluation of the brain and the intracranial blood vessels.
  
  
  CONCLUSIONS
  One major advantage of dual-energy CT is the capability of material differentiation. In general, this property can be applied to bone removal in CT angiography for easier and faster postprocessing. In neuroradiology, material decomposition allows detection of hemorrhage on contrast-enhanced CT scans and facilitates the search for the underlying pathologic mechanism of hematomas. The combination of low radiation dose and advantageous spectral information (blood vs contrast) from these datasets justifies broad clinical implementation of dual-energy CT in neuroradiology.
authors.affiliation: Department of Radiology, Maastricht University Medical Centre, Maastricht, The Netherlands. l.jacobi@mumc.nl
authors.forename: Alida A
authors.initials: AA
authors.lastname: Postma
authors.forename: Paul A M
authors.initials: PA
authors.lastname: Hofman
authors.forename: Annika A R
authors.initials: AA
authors.lastname: Stadler
authors.forename: Robert J
authors.initials: RJ
authors.lastname: van Oostenbrugge
authors.forename: Maud P M
authors.initials: MP
authors.lastname: Tijssen
authors.forename: Joachim E
authors.initials: JE
authors.lastname: Wildberger
mesh_terms: D002533:Cerebral Angiography / Q000379:methods*; D002536:Cerebral Arteries / Q000000981:diagnostic imaging*; D002561:Cerebrovascular Disorders / Q000000981:diagnostic imaging*; D006801:Humans; D011857:Radiographic Image Interpretation, Computer-Assisted / Q000379:methods*; D015900:Radiography, Dual-Energy Scanned Projection / Q000379:methods*; D014057:Tomography, X-Ray Computed / Q000379:methods*