• Adriano Keijiro Maeda, Luiz Roberto Aguiar, Carolina Martins, Gerson Linck Bichinho, and Munir Antônio Gariba.
• Postgraduate Health Technology Program, Pontifical Catholic University of Paraná, Curitiba PR, Brazil.
• Arq Neuropsiquiatr. 2013 Aug 1; 71 (8): 540-4.

ObjectiveTo compare two different methods for measuring intracerebral hemorrhage (ICH) volume: the ellipse volume (called ABC/2), and the software-aided planimetric.MethodsFour observers evaluated 20 brain computed tomography (CT) scans with spontaneous ICH. Each professional measured the volume using the ABC/2 and the planimetric methods. The average volumes were obtained, and the intra- and inter-rater variability was determined.ResultsThere is an absolute 2.24 cm3 average difference between both methodologies. Volumes yielded by the ABC/2 method were as much as 14.9% smaller than by the planimetric one. An intra-observer variability rate of 0.46% was found for the planimetric method and 0.18% for the ABC/2. The inter-observer rates were 1.69 and 1.11% respectively.ConclusionsBoth methods are reproducible. The ABC/2 yielded hemorrhage volumes as much as 14.9% smaller than those measured using the planimetric methodology.

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