Background and Purpose- 1/2ABC has been used widely for assessing the volume of intracerebral hematoma. However, it is only suitable for calculating regular and small volume hematomas. Therefore, we re-explored the formula of hematoma volume to find a method that can calculate hematoma volumes accurately, reliably, and quickly. Methods- Computed tomography imaging data of 257 patients with intracerebral hemorrhage were collected. Hematoma volumes were estimated using 3-dimensional Slicer and 7 formulas (π/6ABC, 1/2ABC, 1/3ABC, 2/3SH, 1/2SH, π/6SH, and 2.5/6ABC). Taking the hematoma volumes measured by 3-dimensional Slicer as the reference standard, the accuracy and reliability of the 7 formulas were evaluated. Furthermore, the time needed to calculate hematoma volumes by the 1/2SH method was noted for further analysis. Results- (1) The accuracy of the 7 formulas based on the error analysis from the highest to the lowest was: π/6SH, 1/2SH, 2.5/6ABC, 1/3ABC, 1/2ABC, and π/6ABC or 2/3SH. According to concordance analysis and receiver operating characteristic curve analysis, the results from the highest to lowest were as follows: 1/2SH, π/6SH, 2.5/6ABC, 1/3ABC, 1/2ABC, 2/3SH, and π/6ABC. After categorizing cases according to size, shape, and location of hematoma, the results were almost the same as the results for overall accuracy evaluation in any subgroup. (2) Intraclass correlation coefficient (ICC) of 1/2SH in intra and inter-researcher were 0.998 and 0.989, respectively. For the formula π/6SH, intraclass correlation coefficient was the same as that of 1/2ABC. Kappa values of 1/2SH for intra- and inter-observer were 0.992 and 0.913, respectively. For π/6SH, kappa values of within- and between-reader were 0.984 and 0.904, respectively. (3) The average time taken to calculate hematoma volumes by 1/2SH was 74 seconds. Conclusions- The 1/2SH and π/6SH are accurate, reliable, and rapid methods for calculating hematoma volumes. The accuracy and reliability of 1/2SH were slightly higher than those of π/6SH.

中文翻译：

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1 / 2SH：一种计算自发性脑出血血肿量的简单，准确和可靠的方法。

背景与目的1 / 2ABC已被广泛用于评估脑内血肿的体积。但是，它仅适用于计算常规和小体积血肿。因此，我们重新探索了血肿体积的公式，以找到一种可以准确，可靠，快速地计算血肿体积的方法。方法-收集了257例脑出血患者的计算机断层扫描成像数据。使用3维Slicer和7个公式（π/ 6ABC，1 / 2ABC，1 / 3ABC，2 / 3SH，1 / 2SH，π/ 6SH和2.5 / 6ABC）估计血肿体积。以3维Slicer测得的血肿体积为参考标准，对7种配方的准确性和可靠性进行了评估。此外，记录了通过1 / 2SH方法计算血肿量所需的时间，以进行进一步分析。结果-（1）基于误差分析的从最高到最低的7个公式的准确性为：π/ 6SH，1 / 2SH，2.5 / 6ABC，1 / 3ABC，1 / 2ABC和π/ 6ABC或2 / 3SH。根据一致性分析和接收器工作特性曲线分析，从最高到最低的结果如下：1 / 2SH，π/ 6SH，2.5 / 6ABC，1 / 3ABC，1 / 2ABC，2 / 3SH和π/ 6ABC 。根据血肿的大小，形状和位置对病例进行分类后，结果与任何亚组的总体准确性评估结果几乎相同。（2）内部研究人员和内部研究人员的1 / 2SH类内相关系数（ICC）分别为0.998和0.989。对于公式π/ 6SH，组内相关系数与1 / 2ABC相同。观察者内和观察者间1 / 2SH的卡伯值分别为0.992和0.913。对于π/ 6SH，阅读器内部和阅读器之间的kappa值分别为0.984和0.904。（3）通过1 / 2SH计算血肿量的平均时间为74秒。结论：1 / 2SH和π/ 6SH是计算血肿量的准确，可靠和快速的方法。1 / 2SH的准确性和可靠性略高于π/ 6SH。