Xu Xinghua, Chen Xiaolei, Zhang Jun, Zheng Yi, Sun Guochen, Yu Xinguang, Xu Bainan
From the Department of Neurosurgery, Chinese PLA General Hospital, Beijing, China.
Stroke. 2014 Nov;45(11):3433-5. doi: 10.1161/STROKEAHA.114.007095. Epub 2014 Oct 14.
The Tada (ABC/2) formula has been used widely for volume assessment of intracerebral hematoma. However, the formula is crude for irregularly shaped hematoma. We aimed to compare the accuracy of the ABC/2 formula with open source software Slicer.
Computed tomographic images of 294 patients with spontaneous intracerebral hematoma were collected. Hematoma volumes were assessed with the ABC/2 formula and calculated with software 3D Slicer. Results of these 2 methods were compared with regard to hematoma size and shape.
The estimated hematoma volume was 58.41±37.83 cm(3) using the ABC/2 formula, compared with 50.38±31.93 cm(3) with 3D Slicer (mean percentage deviation, 16.38±9.15%). When allocate patients into groups according to hematoma size, the mean estimation error were 3.24 cm(3) (17.72%), 5.85 cm(3) (13.72%), and 15.14 cm(3) (17.48%) for groups 1, 2, and 3, respectively. When divided by shape, estimation error was 3.33 cm(3) (9.76%), 7.19 cm(3) (18.37%), and 29.39 cm(3) (39.12%) for regular, irregular, and multilobular hematomas.
There is significant estimation error using the ABC/2 formula to calculate hematoma volume. Compared with hematoma size, estimation error is more significantly associated with hematoma shape.
塔达（ABC/2）公式已被广泛用于评估脑内血肿体积。然而，该公式对于形状不规则的血肿并不适用。我们旨在比较ABC/2公式与开源软件Slicer的准确性。
收集了294例自发性脑内血肿患者的计算机断层扫描图像。使用ABC/2公式评估血肿体积，并通过3D Slicer软件进行计算。比较这两种方法在血肿大小和形状方面的结果。
使用ABC/2公式估计的血肿体积为58.41±37.83 cm³，而3D Slicer计算的结果为50.38±31.93 cm³（平均百分比偏差为16.38±9.15%）。根据血肿大小将患者分组后，第1、2和3组的平均估计误差分别为3.24 cm³（17.72%）、5.85 cm³（13.72%）和15.14 cm³（17.48%）。按形状划分时，规则、不规则和多叶形血肿的估计误差分别为3.33 cm³（9.76%）、7.19 cm³（18.37%）和29.39 cm³（39.12%）。
使用ABC/2公式计算血肿体积存在显著的估计误差。与血肿大小相比，估计误差与血肿形状的相关性更大。
