title: Intra- and interobserver variation in CT-evaluated cerebral atrophy.
abstract: Four radiologists evaluated the internal and external atrophy of 94 patients into four grades. The CT scans were evaluated three times without measuring procedures in order to determine the inter- and intraobserver variation. In the third evaluation referential scans were used. A considerable inter- and intraobserver variation was experienced. When using referential scans, both inter- and intraobserver variation was reduced to two consecutive grades. In cases where the estimation of atrophy is of specific importance the visual procedure is not reliable.
authors.affiliation: Department of Diagnostic Radiology, Odense University Hospital, Denmark.
authors.forename: T
authors.initials: T
authors.lastname: Skjødt
authors.forename: H G
authors.initials: HG
authors.lastname: Teisen
authors.forename: K F
authors.initials: KF
authors.lastname: Torfing
authors.forename: J
authors.initials: J
authors.lastname: Blicher
mesh_terms: D001284:Atrophy; D001921:Brain / Q000000981:diagnostic imaging / Q000473:pathology*; D006801:Humans; D014057:Tomography, X-Ray Computed