法医学杂志Pub Date : 2024-08-25DOI: 10.12116/j.issn.1004-5619.2023.230707
Jing-Chen Ge, Min Shang, Ming-Yang Yao, Ming-Fei Wei, Jun-Zhan Shi, Ze-Wei Yao, Jia-Yin Shi, Fan Li
{"title":"Application of MSCT Image Post-Processing Techniques in the Identification of Rib Fracture Malunion.","authors":"Jing-Chen Ge, Min Shang, Ming-Yang Yao, Ming-Fei Wei, Jun-Zhan Shi, Ze-Wei Yao, Jia-Yin Shi, Fan Li","doi":"10.12116/j.issn.1004-5619.2023.230707","DOIUrl":"https://doi.org/10.12116/j.issn.1004-5619.2023.230707","url":null,"abstract":"<p><strong>Objectives: </strong>To compare the application value of three image post-processing techniques volume rendering (VR), multiplanar reformation (MPR) and curved planar reformation (CPR) in the identification of rib fracture malunion.</p><p><strong>Methods: </strong>The types and numbers of rib fracture malunion in 75 patients were recorded, and the sensitivity, specificity, accuracy and Youden index of VR, MPR and CPR in the diagnosis of rib fracture malunion were compared. Receiver operator characteristic (ROC) curve was drawn and area under the curve (AUC) was calculated, and the detection rates of three image post-processing techniques for different types of rib fracture malunion were compared.</p><p><strong>Results: </strong>A total of 243 rib fractures were malunion in 75 patients. The diagnostic sensitivity of VR, MPR and CPR for rib fracture malunion was 52.67%, 79.84% and 91.36%, the specificity was 99.58%, 97.89% and 99.15%, the accuracy was 83.66%, 91.76% and 96.51%, the Youden index was 0.52, 0.78 and 0.91, the AUC was 0.761, 0.889 and 0.953, respectively. Compared with VR, there were statistically significant differences in the number of broken rib end misalignment over 1/3, broken rib end overlap, broken rib end angulation and intercostal bridge detected in MPR (<i>P</i><0.05). Compared with VR, there was a statistically significant difference in the number of different types of rib fracture malunion detected by CPR (<i>P</i><0.05). Compared with MPR, there were statistically significant differences in the number of broken rib end misalignment over 1/3, broken rib end separation and intercostal bridge detected in CPR (<i>P</i><0.05).</p><p><strong>Conclusions: </strong>The three image post-processing techniques are of great significance for the identification of rib fracture malunion. Especially CPR is highly effective in the diagnosis of rib fracture malunion, and can be used as the main post-processing technique for forensic clinical identification of rib fracture malunion.</p>","PeriodicalId":12317,"journal":{"name":"法医学杂志","volume":"40 4","pages":"324-329"},"PeriodicalIF":0.0,"publicationDate":"2024-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142767701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
法医学杂志Pub Date : 2024-08-25DOI: 10.12116/j.issn.1004-5619.2023.130901
法医学杂志Pub Date : 2024-08-25DOI: 10.12116/j.issn.1004-5619.2024.440116
Wen-Qing Guo, Min Chen, Ao Ma, Ping Huang, Ji Zhang
{"title":"Application of Protease-Hydrogen Peroxide Digestion Method in Forensic Diatom Examination.","authors":"Wen-Qing Guo, Min Chen, Ao Ma, Ping Huang, Ji Zhang","doi":"10.12116/j.issn.1004-5619.2024.440116","DOIUrl":"https://doi.org/10.12116/j.issn.1004-5619.2024.440116","url":null,"abstract":"<p><strong>Objectives: </strong>To propose a novel forensic diatom examination method, namely the protease-hydrogen peroxide (PHP) digestion method, and to explore its potential application in forensic practice.</p><p><strong>Methods: </strong>The PHP digestion method was applied to process lung tissues and compared with the traditional nitric acid digestion method in terms of diatom quantity, recovery rate, proportion of diatom fragments, and recovery efficiency of different diatom genera.</p><p><strong>Results: </strong>The PHP digestion method showed higher diatom quantity, recovery rate, and proportion of diatom fragments compared to the traditional nitric acid digestion method with statistical significance. The average diatom recovery rate was as high as 93.95%. In the lung tissues digested with nitric acid, there were 65 <i>Achnanthes</i>, 36 <i>Nitzschia</i> Ⅰ, 22 <i>Nitzschia</i> Ⅱ, 20 <i>Diploneis</i> and 8 <i>Cymbella,</i> showing significantly lower recovery rates compared to water samples which had 154 <i>Achnanthes</i>, 44 <i>Nitzschia</i> Ⅰ, 45 <i>Nitzschia</i> Ⅱ, 33 <i>Diploneis</i> and 23 <i>Cymbella</i>. However, with the PHP digestion method, only <i>Nitzschia</i> Ⅱ showed a lower recovery rate compared to water samples (<i>P</i><0.05). At the same time, the diatom recovery stability of the PHP digestion method was higher than that of the nitric acid digestion method.</p><p><strong>Conclusions: </strong>The PHP digestion method is superior to the traditional nitric acid digestion method in the lung tissue diatom extraction efficiency. Additionally, it holds significant advantages in safety, environmental protection, and other aspects. It is expected to be applied in forensic drowning identification.</p>","PeriodicalId":12317,"journal":{"name":"法医学杂志","volume":"40 4","pages":"317-323"},"PeriodicalIF":0.0,"publicationDate":"2024-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142767713","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
法医学杂志Pub Date : 2024-08-25DOI: 10.12116/j.issn.1004-5619.2023.430404
{"title":"Analysis of 39 Forensic Clinical Sex Identification Cases after Sex Reassignment Surgery.","authors":"Yu-Jiao Wu, Yue-Qin Zhou, Yi-Wen Shen, Jie-Qing Jiang","doi":"10.12116/j.issn.1004-5619.2023.230602","DOIUrl":"https://doi.org/10.12116/j.issn.1004-5619.2023.230602","url":null,"abstract":"<p><strong>Objectives: </strong>To analyze the characteristics of forensic clinical sex identification cases after sex reassignment surgery for transsexualism, discuss the main point of forensic clinical sex identification in China based on domestic and foreign sex change policies and related cases, so as to standardize relevant identification.</p><p><strong>Methods: </strong>A total of 39 cases of forensic clinical sex identification were collected from Center for Forensic Science, Shanghai Medical College of Fudan University in recent years, and the ratio of sex, identification time, the location of surgery, secondary sex characteristic and other information were statistically analyzed.</p><p><strong>Results: </strong>Transgender woman accounted for 97.4% of the cases, and 94.9% of the cases were operated in Thailand. All cases were identified after the sex reassignment surgery, and at least one of the secondary sex characteristics was consistent with the postoperative primary sexual characters. There were only 2 cases in which auxiliary examination was applied.</p><p><strong>Conclusions: </strong>Forensic clinical sex identification should be based on the principle that the primary and secondary sex characteristics are consistent with the changed sex.</p>","PeriodicalId":12317,"journal":{"name":"法医学杂志","volume":"40 4","pages":"365-371"},"PeriodicalIF":0.0,"publicationDate":"2024-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142767694","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Reliability and Validity of the Life History of Aggression-Chinese Version in Schizophrenia Patients Assessment.","authors":"Xia-Can Chen, Qin Yang, Qin-Ting Zhang, Ai-Li Ouyang, Jia-Jun Xu, Rui Yang, Zi-Ye Wang, Jin-Hui Zhai, Yan Li, Xiao-Rong Qin, Jun-Mei Hu","doi":"10.12116/j.issn.1004-5619.2023.130602","DOIUrl":"https://doi.org/10.12116/j.issn.1004-5619.2023.130602","url":null,"abstract":"<p><strong>Objectives: </strong>To provide a longitudinal evaluation tool based on the frequency of aggressive behavior for the aggression assessment of schizophrenia patients.</p><p><strong>Methods: </strong>The Life History of Aggression was translated and revised to form the Life History of Aggression-Chinese Version (LHA-CV) based on 369 patients diagnosed with schizophrenia in the Chengdu community and compulsory medical institution. The reliability of LHA-CV was analyzed by means of split-half reliability, test-retest reliability and inter-evaluator consistency. The validity was analyzed by item analysis, construct validity and criterion validity.</p><p><strong>Results: </strong>Item analysis found that LHA-CV had good homogeneity and discriminant validity. Exploratory factor analysis found that the Kaiser-Meyer-Olkin (KMO) test value was 0.80, and the Bartlett's sphericity test <i>χ</i><sup>2</sup>=1 203.46 (<i>P</i><0.05), and it revealed four factors including non-physical aggression, physical aggression, self-directed aggression and antisocial behavior/consequences. The factor loadings for all 11 items were greater than 0.40. Confirmatory factor analysis was performed on the factor model, Chi-square degree of freedom (<i>χ</i><sup>2</sup>/df) was 3.61, root mean square error of approximation (RMSEA) was 0.07, goodness-of-fit index (GFI) was 0.92, comparative fit index (CFI) was 0.90, incremental fit index (IFI) was 0.90, and the discriminant validity of each factor was good. The criterion validity test showed the total score of LHA-CV was positively correlated with the aggressive behavior level of MacArthur Community Violence Instrument, the total score of Buss-Perry Aggression Scale, and the score of Antisocial Personality Disorder Subscale of Personality Diagnostic Questionnaire-4th Edition Plus (PDQ-4+_ASPD, <i>P</i><0.05). The Cronbach's <i>α</i> coefficient of non-physical aggression, physical aggression, self-directed aggression, antisocial behavior/consequences and LHA-CV total score were 0.82, 0.73, 0.74, 0.56 and 0.79, respectively. The test-retest reliability, Spearman-Brown split-half reliability and intra-class correlation coefficient of LHA-CV total score were 0.82 (<i>P</i><0.05), 0.66 and 0.99, respectively.</p><p><strong>Conclusions: </strong>LHA-CV has good reliability and validity, and can be used as an evaluation tool for longitudinally assessing aggressive behavior in schizophrenia patients.</p>","PeriodicalId":12317,"journal":{"name":"法医学杂志","volume":"40 4","pages":"352-358"},"PeriodicalIF":0.0,"publicationDate":"2024-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142767732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
法医学杂志Pub Date : 2024-06-25DOI: 10.12116/j.issn.1004-5619.2023.230508
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