Study on Identification Indexes in adult chest CT.for individualization
10.13618/j.issn.1001-5728.2025.03.009
- VernacularTitle:成人胸部CT同一认定指标的研究
- Author:
Yingqi WANG
1
;
Ling ZHONG
;
Peipei ZHUO
;
Guanghui HONG
;
Xuewei ZHU
;
Jieqing JIANG
Author Information
1. 复旦大学上海医学院司法鉴定中心,上海 200032
- Publication Type:Journal Article
- Keywords:
Forensic radiology;
Personal identification;
Linear regression analysis;
Chest CT
- From:
Chinese Journal of Forensic Medicine
2025;40(3):312-316,322
- CountryChina
- Language:Chinese
-
Abstract:
Objective To find and select stable and specific identification indexes in chest CT images,to establish mathematical models and provide a systematic and scientific identification method.Methods Medical imaging analysis and processing technology were applied to compare the image indexes such as lung apical shadow,double lung texture,trachea,sternum,thoracic morphology,liver,spleen,interlobular fissure morphology,first rib,aorta and thoracic vertebrae morphology of 600 serial chest CT scans of of the same adults at different periods and 600 scans of different adults.Consistency test(Kappa analysis)was applied to determine the consistency of different identification indexes,and to screen out the image identification indexes that were not easily affected by subjective factors and had high consistency;the cumulative exclusion probability method was applied to calculate the combined identification ability of the observation indexes,and select optimal indexes to establish the identification index system.Results Five indexes-left lung texture,right lung texture,interlobular fissure of the liver,first rib on the left side,and first rib on the right side demonstrated high consistency across age groups and minimal subjective interference.A combination of any three indexes achieved＞99.99％discrimination probability for homologous versus non-homologous sources identification.Conclusion The independent or combined use of the indexes of left lung texture,right lung texture,interlobular fissure of the liver,first rib on the left side,and first rib on the right side enables individual identification in adult chest CT under different imaging conditions.
