title: Diagnostic and therapeutic consequences of repeat brain imaging and follow-up vascular imaging in stroke patients.
abstract: OBJECTIVE
  Recently, the diagnostic and therapeutic importance of repeat radiologic imaging in stroke patients has been questioned. The aim of this study was to show the therapeutic and diagnostic consequences of both repeat brain imaging and follow-up vascular imaging in this group of patients.
  
  
  METHODS
  Neuroradiologic images and reports as well as clinical records of 317 patients (209 men and 108 women; mean age, 63 years) were reviewed retrospectively to determine the number of modifications made to the diagnosis and therapeutic regimen and to the classification of neuroradiologic findings.
  
  
  RESULTS
  Two hundred thirty-eight repeat imaging procedures were performed in 171 patients. Of these, 76 were vascular imaging examinations (11 CT angiograms, 13 MR angiograms, 52 digital subtraction angiograms) and 162 were cross-sectional brain imaging studies (54 MR images, 108 CT scans). Forty of the 76 vascular imaging procedures and 77 of the 162 repeat cross-sectional brain imaging studies led to important diagnostic modifications with consequences for the patients' therapy and prognosis.
  
  
  CONCLUSIONS
  Our study establishes that vascular imaging methods as well as cross-sectional brain imaging used as repeat imaging procedures in stroke patients can have important diagnostic and therapeutic consequences. We believe that repeat imaging in selected subgroups will be cost-effective.
authors.affiliation: Department of Neuroradiology, University of Heidelberg, Germany.
authors.forename: B
authors.initials: B
authors.lastname: Ertl-Wagner
authors.forename: T
authors.initials: T
authors.lastname: Brandt
authors.forename: C
authors.initials: C
authors.lastname: Seifart
authors.forename: M
authors.initials: M
authors.lastname: Forsting
mesh_terms: D015901:Angiography, Digital Subtraction; D001921:Brain / Q000000981:diagnostic imaging / Q000473:pathology; D002533:Cerebral Angiography; D002561:Cerebrovascular Disorders / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000628:therapy*; D005260:Female; D006801:Humans; D018810:Magnetic Resonance Angiography; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed