IngentaConnect A precise, simple, convenient and new method for estimation of in...

Authors: Zhao, Kai-Jun¹; Liu, Yu²; Zhang, Ru-Yuan³; Wang, Xiao-Qiang¹; Gao, Chengjin³; Shen, Jian-Kang¹

Source: Neurological Research, Volume 31, Number 10, December 2009 , pp. 1031-1036(6)

Abstract:

Objectives: The formula 1/2abc was a relatively reliable technique for the estimation of mostly intracranial hematoma volume, but its accuracy was prone to be affected by some particular shapes of hematoma, such as multinodular, separated and so on. In this work, we aimed to validate a more accurate method for the estimation of intracranial hematoma volume, which were free limitations of axial slices shapes.

Methods: We investigated the computed tomography (CT) scans of 186 patients with intracranial hematoma. The volume values of 186 intracranial hematomas were respectively assessed using five different methods.

Results: For the formula 2/3Sh, the excellent correlation coefficient obtained using Pearson and Spearman's coefficients were 0.990 and 0.990, respectively. Meanwhile, the estimated intracranial hematoma volume using the formula 2/3Sh was fairly precise, with a <1% (−0.00±0.14, p>0.05) underestimation. However, the intracranial hematoma volume values were estimated by the formulas 1/2abc, Tada and 1/3abc, in comparison with the gold standard (43.16±37.55 ml), were 45.98±39.97 ml (p>0.05) with a 5% (0.05±0.25, p<0.05) overestimation, 48.12±41.84 ml (p>0.05) with 10% (0.10±0.26, p<0.05) overestimation and 30.65±26.65 ml (p<0.05) with a nearly 29% (−0.29±0.16, p<0.05) underestimation, respectively.

Discussions: Owing to the area, length and width of the largest axial hematoma slice clearly marked in CT imaging, the formula 2/3Sh in comparison with other methods was a precise, simple and convenient estimation technique.

Keywords: HEMATOMA; COMPUTED TOMOGRAPHY; MAGNETIC RESONANCE IMAGING; STROKE

Document Type: Research article

DOI: 10.1179/174313209X385662

Affiliations: 1: Department of Neurosurgery, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China 2: Department of Radiology, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China 3: Department of Surgery, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China

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A precise, simple, convenient and new method for estimation of intracranial hematoma volume-the formula 2/3Sh