The reliability and accuracy of the summation method in calculating the area of subcap aponeurotic hematoma
10.13618/j.issn.1001-5728.2025.03.019
- VernacularTitle:相加法计算帽状腱膜下血肿面积准确性验证
- Author:
Nianfeng XIE
1
;
Lei WANG
;
Yinlong XU
;
Jun LIU
;
Lihong ZHOU
Author Information
1. 浙江省建德市公安司法鉴定中心,浙江建德 311600
- Publication Type:Journal Article
- Keywords:
Forensic;
Cap subaponeurotic hematoma;
Area measurement
- From:
Chinese Journal of Forensic Medicine
2025;40(3):365-368
- CountryChina
- Language:Chinese
-
Abstract:
Objective To verify the accuracy of the"manual tracing+summation method"for calculating the area of subcap aponeurotic hematoma using CT images in the practice of judicial expertise.Methods Subcap aponeurotic hematoma at different locations were simulated using"skull+colored clay plastic"model.The simulated hematoma areas were calculated via RadiAnt DICOM Viewer(64-bit)after CT scanning and compared with manual measurements.Results(1)For completely scaned simulated hematoma,the area of manual calculation is smaller than that measured by the expert assistance system for human injury identification,yet demonstrated relatively high accuracy;(2)Scanning planes parallel to the three scan baselines has the greatest impact on the imaging of top hematoma,often leading to incomplete scanning of both the top of the skull and hematoma.Conclusion When the scan of hematoma is complete,the subcap aponeurotic hematoma calculated by manual tracing is close to true values.However,incomplete scans may lead to disputable results and time-consuming and laborious manual calculations.In view of the current situation,pixel level semantic segmentation technology in the field of computer vision can be combined with the application of level set,gray reconstruction and other segmentation algorithms to obtain the three-dimensional outline of the hematoma area,so as to calculate the hematoma area and provide the most direct data analysis for judicial identification.
