Excellent accuracy of ABC/2 volume formula compared to computer-assisted volumetric analysis of subdural hematomas

Sae-Yeon Won, Andrea Zagorcic, Daniel Dubinski, Johanna Quick-Weller, Eva Herrmann, Volker Seifert and Juergen Konczalla

PLOS ONE, 2018, vol. 13, issue 6, 1-6

Abstract: Background: Subdural hematoma (SDH) is a common disease associated with high morbidity, which is becoming more prominent due to the increasing incidence. Decision for a surgical evacuation is made depending on the clinical appearance and the volume of SDH, wherefore it is important to have a simple ‘bedside’ method to measure and compare the volume of SDH. Objective: The aim of the study was to verify the accuracy of the simplified ABC/2 volumetric formula to determine a valuable tool for the clinical practice. Methods: Preoperative CT-scans of 83 patients with SDHs were used for the computer-assisted volumetric measurement via BrainLab® as well as the ABC/2 volumetric measurement. A = largest length (anterior to posterior) of the SDH; B = maximum width (lateral to midline) 90° to A; C = maximum height (coronal plane or multiplication of slices) of the hematoma. These measurements were performed by two independent clinicians in a blinded fashion. Both volumes were compared by linear regression analysis of Pearson and Bland-Altman regression analysis. Results: Among 100 SDHs, 53% were under an 47% were over 100cm3 showing a well distribution of the hematoma sizes. There was an excellent correlation between computer-assisted volumetric measurement and ABC/2 (R2 = 0.947, p

Date: 2018
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0199809

DOI: 10.1371/journal.pone.0199809

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