title: Role of perfusion CT in differentiating between various cerebral masses using normalized permeability surface area product and cerebral blood volume.
abstract: OBJECTIVE
  The objective was to assess usefulness of a combined analysis using the perfusion computed tomography parameters permeability surface area product (PS) and cerebral blood volume (CBV) in the differential grouping of various cerebral masses.
  
  
  METHODS
  Thirty patients who had a cerebral mass, confirmed by pathologic verification, were included. We classified PS and CBV results for various cerebral masses by visual as well as semiquantitative assessment. To verify statistically significant differences between the groups, one-way analysis of variance was performed.
  
  
  RESULTS
  Patients were categorized into five groups with statistically significant differences (P<.01).
  
  
  CONCLUSIONS
  PS and CBV were useful in the differential diagnosis of cerebral masses.
authors.affiliation: Department of Radiology, Bucheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, South Korea.
authors.forename: Youn-Joo
authors.initials: YJ
authors.lastname: Lee
authors.forename: Kook-Jin
authors.initials: KJ
authors.lastname: Ahn
authors.forename: Bum-Soo
authors.initials: BS
authors.lastname: Kim
authors.forename: Won-Jong
authors.initials: WJ
authors.lastname: Yoo
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000465:Algorithms; D001810:Blood Volume; D001811:Blood Volume Determination / Q000379:methods*; D001932:Brain Neoplasms / Q000000981:diagnostic imaging* / Q000503:physiopathology*; D002560:Cerebrovascular Circulation; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D055420:Perfusion Imaging / Q000379:methods*; D010539:Permeability; D011857:Radiographic Image Interpretation, Computer-Assisted / Q000379:methods*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D014057:Tomography, X-Ray Computed / Q000379:methods*