title: [Volumetric determination of cerebral infarction in the acute phase using skull computed tomography without contrast: comparative study of 3 methods].
abstract: The determination of lesion volumes in acute cerebral Infarction (CI) has important prognostic and therapeutic implications. Three different methods -computerised technique, linear planimetry and the A.B.C/2 formula - were compared in 27 patients using non-contrast computerised tomography (CT) made at hospital admission (first 48 hours following symptom onset). Two independent observers performed the measurements. The Intra-class correlation coefficients (ICCs) were determined. The three methods exhibited high interrelation. There was a close correlation between the linear planimetry as well as the ABC/2 formula and the computerised method with ICCs of 0.94-0.95 and 0.835-0.90 respectively. Linear planimetry and the ABC/2 formula were also highly correlated, with ICCs between 0.97 and 0.99. In conclusion, the computerised method is probably the most accurate. Linear planimetry and the ABC/2 formula are also reliable, however. The A.B.C/2 formula should be applied routinely to CI volume determination based on its low cost and fast calculation.
authors.affiliation: Setor de Estudos em Doenças Cerebrovasculares, Serviço de Neurologia Professor Sérgio Novis, Hospital Universitário Clementino Fraga Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brasil.
authors.forename: R
authors.initials: R
authors.lastname: Gómez-Mariño
authors.forename: C
authors.initials: C
authors.lastname: André
authors.forename: S A
authors.initials: SA
authors.lastname: Novis
mesh_terms: D000208:Acute Disease; D002544:Cerebral Infarction / Q000175:diagnosis / Q000000981:diagnostic imaging* / Q000473:pathology; D006801:Humans; D011857:Radiographic Image Interpretation, Computer-Assisted / Q000379:methods; D015203:Reproducibility of Results; D014057:Tomography, X-Ray Computed / Q000379:methods*