Hematoma volumes of spontaneous intracerebral hemorrhage:the ellipse (ABC/2) method yielded volumes smaller than those measured using theplanimetric method

Arquivos de Neuro-Psiquiatria

Adriano Keijiro Maeda²  Luiz Roberto Aguiar¹  Carolina Martins¹  Gerson Linck Bichinho¹  Munir Antonio Gariba¹ 

[1] ,Pontifical Catholic University ofParana Postgraduate Health Technology Program Curitiba PR ,Brazil

关键词: cerebral hemorrhage;    tomography;    evaluation studies;    hemorragia cerebral;    tomografia;    estudos de avaliacao;   

DOI  :  10.1590/0004-282X20130084

来源: SciELO

【 摘 要 】

OBJECTIVE: To compare two different methods for measuring intracerebral hemorrhage (ICH) volume: the ellipse volume (called ABC/2), and the software-aided planimetric.METHODS: Four 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. RESULTS: There 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. CONCLUSIONS: Both 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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