Quantitative study of abdominal hemorrhage in abdominal trauma based on computed tomography images / 中华创伤杂志

ABSTRACT

Objective To verify the feasibility and accuracy of the quantitative evaluation of the volume of internal abdominal hemorrhage based on CT images.Methods The clinical data of 76 patients diagnosed as abdominal hemorrhage or hemoperitoneum and performed with emergency surgery in the Second Affiliated Hospital to Wenzhou Medical University from January 2009 to September 2016 were retrospectively analyzed by case-control study.The Noboru Oriuchi's formula was used to calculate the volume of abdominal hemorrhage based on CT images,and the results were compared and adjusted with the volume of actual abdominal hemorrhage recorded during the operation.SPSS 21.0 was used to statistically analyze the data.The linear regression was analyzed on the results measured by the two methods.Results The volume of abdominal hemorrhage measured by the CT calculation method ranged from 10 to 4 335 ml,while the corresponding volume measured by operational calculation method ranged from 200 ml to 4 490 ml.The absolute difference in the volume measured by these two methods ranged from 4.8 ml to 500 ml.The ratio of the absolute difference to the volume of abdominal hemorrhage by operational calculation method ranged from 0.2％ to 95.0％,the median of which was 4.5％ (2.8％,8.9％).When the exact volume of abdominal hemorrhage was ＜ 500 ml,the absolute difference in the exact volume ranged from 30.0％ to 95.0％,the median of which was 69.1％ (51.2％,78.6％).When the volume was less than 500 ml,the ratio ranged from 0.2％-13.6％,the median of which was 4.2％ (2.7％,6.4％).Analysis of the numbers of the two measuring methods with linear correlation method after eliminating the cases in which the bleeding volume was less than 500 ml showed that two methods presented a linear correlation (r =0.971,P ＜ 0.05).Conclusion After the conventional abdominal CT scanning,the Noboru Oriuchi's formula can be used to accurately calculate the volume of abdominal hemorrhage in patients with volume of abdominal hemorrhage more than 500 ml.