Forensic Imaging最新文献_第2页

Feasibility of new thresholds for coronary artery calcium score using low-tube voltage protocols in postmortem computed tomography1 死后计算机断层扫描中使用低管电压协议进行冠状动脉钙化评分的新阈值的可行性1

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Forensic Imaging Pub Date : 2024-11-09 DOI: 10.1016/j.fri.2024.200615

Kyoung Eun Cheon , Se-min Oh , Sung Wook Choi , Man-Seok Han , Jang Gyu Cha , Heon Lee , Minju Lee , Sookyoung Lee

{"title":"Feasibility of new thresholds for coronary artery calcium score using low-tube voltage protocols in postmortem computed tomography1","authors":"Kyoung Eun Cheon , Se-min Oh , Sung Wook Choi , Man-Seok Han , Jang Gyu Cha , Heon Lee , Minju Lee , Sookyoung Lee","doi":"10.1016/j.fri.2024.200615","DOIUrl":"10.1016/j.fri.2024.200615","url":null,"abstract":"<div><h3>Objective</h3><div>To validate whether low tube voltage scans of 100 kilovolt-peak (kVp) and 80 kVp for measuring coronary artery calcium score (CACS) using computed tomography (CT) yield comparable results to the standard protocol of 120 kVp using postmortem CT (PMCT).</div></div><div><h3>Materials and Methods</h3><div>We obtained scans for cadavers where CAC was observed on PMCT scans. In addition to the standard protocol, tube voltage scans were also obtained under conditions of 100 kVp and 80 kVp. We obtained a newly adapted threshold under low tube voltage and compared them with the standard protocol.</div></div><div><h3>Results</h3><div>The CACS was 851±1421 (p=0.99) and 861±1433 (p=0.99) for the 120-kVp and 100-kVp scans, respectively, and 845±1390 (p=0.99) for the 80-kVp scan using the newly adapted threshold. The 120-kVp and 100-kVp scans demonstrated an almost perfect correlation (r=0.99996, p<0.0001). In the Bland–Altman analysis, the 9 5% limits of agreement ranged from -44 to 25. Similarly, the CACS obtained using the adapted threshold for the 80-kVp scan also demonstrated an excellent correlation with the standard 120-kVp scan (r=0.99993, p<0.0001). In the Bland–Altman analysis, the 95 % limits of agreement ranged from -62 to 75. The effective radiation dose was 2.21±0.064 mSv (p<0.0001) for the 120-kVp scan, 1.35±0.070 mSv (p<0.0001) for the 100-kVp scan, and 0.72±0.48 mSv (p<0.0001) for the 80-kVp scan.</div></div><div><h3>Conclusion</h3><div>This study suggests that PMCT can be used to measure CACS at low tube voltages and that significant dose reductions in patients can be expected in clinical practice.</div></div>","PeriodicalId":40763,"journal":{"name":"Forensic Imaging","volume":"39 ","pages":"Article 200615"},"PeriodicalIF":0.8,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142704138","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

Effects of carbonization on gunshot residue detection in an animal model 碳化对动物模型枪弹残留物检测的影响

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Forensic Imaging Pub Date : 2024-11-04 DOI: 10.1016/j.fri.2024.200612

Charbel El Khoury Moussa , Bruno Payré , Sébastien Aries , Stéphane Grill , Sarah Galland , Lise Pestourie , Fabrice Dedouit , Norbert Telmon , Fréderic Savall , Céline Guilbeau-Frugier

{"title":"Effects of carbonization on gunshot residue detection in an animal model","authors":"Charbel El Khoury Moussa , Bruno Payré , Sébastien Aries , Stéphane Grill , Sarah Galland , Lise Pestourie , Fabrice Dedouit , Norbert Telmon , Fréderic Savall , Céline Guilbeau-Frugier","doi":"10.1016/j.fri.2024.200612","DOIUrl":"10.1016/j.fri.2024.200612","url":null,"abstract":"<div><div>The detection of gunshot residue (GSR) can be useful to determine if the wound has been caused by a firearm and it could help to differentiate the entry wound from the exit one. Carbonization is a good method for altering crime scenes. However, there are few studies in this specific context. The first objective of our study was to examine the persistence of GSR in wounds after carbonization. The second aim was to differentiate entry wounds from exit ones.</div><div>For the experiment, bullets were fired with a 22LR on sheep limbs at contact range.</div><div>The specimens were divided into four groups: two that weren't shot at (fresh and carbonized limbs) and two of shot limbs (one with carbonization and one without). Carbonization was performed in the open air using an accelerant.</div><div>Wounds were analyzed using Scanning Electron Microscopy with Energy Dispersive X-ray spectrometry (SEM–EDX) and Inductively Coupled Plasma Mass Spectrometry (ICP-MS).</div><div>Lead, Antimony and Barium were observed using SEM-EDX only in the entry wounds, while lead was found in the exit ones. ICP-MS enabled the detection of these elements in the entry and exit wounds but predominantly in the entry ones. After carbonization we observed a huge decrease of GSR. With SEM-EDX most of the particles detected were only consistent with GSR. Anyway, the identification of GSR and the differentiation between entry and exit wounds were still possible with both techniques. Therefore, they are suitable for detecting GSR in carbonized gunshot wounds under the specific conditions of our experiment.</div></div>","PeriodicalId":40763,"journal":{"name":"Forensic Imaging","volume":"39 ","pages":"Article 200612"},"PeriodicalIF":0.8,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142593222","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

Decreased hepatic CT value on immediate postmortem CT after CPR: Comparison with antemortem CT and correlation with liver enzymes changes 心肺复苏术后立即尸检的肝脏 CT 值下降：与死前CT的比较以及与肝酶变化的相关性

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Forensic Imaging Pub Date : 2024-10-22 DOI: 10.1016/j.fri.2024.200609

Tomoaki Hagita , Seiji Shiotani , Kento Inoue , Yukio Kosako , Yasuji Matsuno

{"title":"Decreased hepatic CT value on immediate postmortem CT after CPR: Comparison with antemortem CT and correlation with liver enzymes changes","authors":"Tomoaki Hagita , Seiji Shiotani , Kento Inoue , Yukio Kosako , Yasuji Matsuno","doi":"10.1016/j.fri.2024.200609","DOIUrl":"10.1016/j.fri.2024.200609","url":null,"abstract":"<div><div>Purpose We compared hepatic antemortem CT (AMCT) and postmortem CT (PMCT) values obtained in the same subjects. The correlations between the changes in hepatic CT values and changes in aspartate aminotransferase (AST), alanine aminotransferase (ALT), and lactate dehydrogenase (LDH) values were also investigated.</div><div>Materials and methods Fifty subjects (20 males, 30 females; mean age: 85.9 ± 7.9 years; range: 67–100 years) who were transported to the emergency room in cardiopulmonary arrest (CPA) and underwent PMCT immediately after unsuccessful cardiopulmonary resuscitation (CPR) comprised the study population. The hepatic AMCT and PMCT values were both measured, and the differences between the two were calculated. The differences between AST, ALT, and LDH values at CPR and antemortem were also calculated. The correlations between the hepatic CT value differences and AST, ALT, and LDH value differences also were assessed.</div><div>Results The hepatic AMCT and PMCT values of 61.7 ± 6.8 Hounsfield Unit (HU) and 46.2 ± 8.2 HU, respectively, were significantly different. The AST, ALT, and LDH values were significantly higher at CPR than at antemortem. The differences in the hepatic CT values and in the AST, ALT, and LDH values were moderately correlated.</div><div>Conclusion The hepatic values were significantly lower on PMCT than on AMCT. The changes in hepatic CT values correlated with the changes in the liver deviation enzyme values. These results indicate the possibility that ischemic, hypoxic injury, and anerobic glycolysis of the liver at CPR after CPA are the cause of decreased hepatic PMCT values.</div></div>","PeriodicalId":40763,"journal":{"name":"Forensic Imaging","volume":"39 ","pages":"Article 200609"},"PeriodicalIF":0.8,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142528529","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

Predictive value of coronary artery calcium score on radiological and autoptic findings in cases of sudden death 冠状动脉钙化评分对猝死病例放射学和自体检查结果的预测价值

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Forensic Imaging Pub Date : 2024-10-22 DOI: 10.1016/j.fri.2024.200610

Jessika Camatti , Anna Laura Santunione , Stefano Draisci , Drago Antonella , Maria Grazia Amorico , Guido Ligabue , Enrico Silingardi , Pietro Torricelli , Rossana Cecchi

{"title":"Predictive value of coronary artery calcium score on radiological and autoptic findings in cases of sudden death","authors":"Jessika Camatti , Anna Laura Santunione , Stefano Draisci , Drago Antonella , Maria Grazia Amorico , Guido Ligabue , Enrico Silingardi , Pietro Torricelli , Rossana Cecchi","doi":"10.1016/j.fri.2024.200610","DOIUrl":"10.1016/j.fri.2024.200610","url":null,"abstract":"<div><div>Calcium Artery Coronary Score (CACS) is a noninvasive examination of the coronary arteries in which the amount of calcium is calculated using cardiac Computed Tomography. The role of postmortem imaging in sudden death has been the subject of increasing interest in recent years, and previous studies have proposed a possible correlation between CACS and autopsy findings.</div><div>The present study aims to establish a correlation between CACS, the presence of coronary artery opacification defects on Multi-Phase Post-Mortem Computed Tomography Angiography (MPMCTA), and the presence of coronary stenosis at autopsy, in order to verify whether CACS confirms its predictive value in terms of cardiac risk and can guide the decision to perform or not to perform MPMCTA.</div><div>A cohort of 24 subjects who died suddenly was examined. Firstly, MPMCTA was performed, then autopsy was carried out. CACS was calculated, the detection of opacification defects on MPMCTA was investigated and the presence of coronary stenoses on autopsy was described.</div><div>24 deceased individuals (53 years ± 11.7; 20 men) were evaluated. CACS has a positive predictive value of 0.78 and a negative predictive value of 0.73 in assessing the presence of radiological coronary artery opacification defects. The positive predictive value on stenosis relief is 0.88, while the negative predictive value on the same relief is 0.73.</div><div>CACS is an appropriate additional tool in the evaluation of sudden death cases. Our results provided an encouraging contribution to the systematic application of CACS in cases of sudden death.</div></div>","PeriodicalId":40763,"journal":{"name":"Forensic Imaging","volume":"39 ","pages":"Article 200610"},"PeriodicalIF":0.8,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142528530","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

Radiologic imaging properties of various gemstones 各种宝石的放射成像特性

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Forensic Imaging Pub Date : 2024-10-21 DOI: 10.1016/j.fri.2024.200607

Angi M. Christensen , Ian S. Saginor , Mary R. Mani , Thomas D. Ruder , Jodi B. Webb

引用次数: 0

Neural radiance fields as a complementary method to photogrammetry for forensic 3D documentation: Initial comparative insights 神经辐射场作为摄影测量法的补充方法，用于法医三维记录：初步比较见解

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Forensic Imaging Pub Date : 2024-10-21 DOI: 10.1016/j.fri.2024.200605

Haruki Fukuda , Summer J. Decker , Jonathan M. Ford , Wolf Schweitzer , Lars C. Ebert

{"title":"Neural radiance fields as a complementary method to photogrammetry for forensic 3D documentation: Initial comparative insights","authors":"Haruki Fukuda , Summer J. Decker , Jonathan M. Ford , Wolf Schweitzer , Lars C. Ebert","doi":"10.1016/j.fri.2024.200605","DOIUrl":"10.1016/j.fri.2024.200605","url":null,"abstract":"<div><h3>Objectives</h3><div>Photogrammetry is widely used in forensic practice to create 3D models of crime scenes, bodies, living individuals, and objects. However, it has limitations in accurately capturing transparent, reflective, and low-texture surfaces, which can hinder forensic investigations. Neural Radiance Fields (NeRFs), a recently developed method, offer a potential solution by creating more accurate and detailed 3D models in these challenging contexts. This study aims to evaluate whether NeRFs can serve as effective alternatives to structure-from-motion (SfM) photogrammetry for recording forensic autopsies.</div></div><div><h3>Materials and Methods</h3><div>Photogrammetric scans were performed on a variety of forensic subjects, including a cadaver with skin discoloration and epidermal exfoliation, a metal trashcan, a vehicle, and a mock crime scene. The scans were processed using traditional photogrammetry software (Meshroom) and compared with NeRF-based visualizations generate using instant neural graphics primitives.</div></div><div><h3>Results</h3><div>NeRF-based models provided more lifelike and detailed visualizations than photogrammetry, particularly when documenting transparent, reflective, or featureless surfaces. NeRF demonstrated superior capability in capturing complex details that photogrammetry struggled with.</div></div><div><h3>Conclusion</h3><div>NeRF technology shows considerable promise for improving the documentation of forensic autopsies, offering enhanced visual fidelity for challenging surfaces such as transparent or reflective materials. While the method presents challenges related to editing, software compatibility, and high computational demands, its potential benefits in forensic investigations are evident and merit further exploration.</div></div>","PeriodicalId":40763,"journal":{"name":"Forensic Imaging","volume":"39 ","pages":"Article 200605"},"PeriodicalIF":0.8,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142528481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cranial fluctuating asymmetry and schizophrenia in a contemporary Danish population 颅骨波动不对称与当代丹麦人群中的精神分裂症

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Forensic Imaging Pub Date : 2024-10-18 DOI: 10.1016/j.fri.2024.200606

Trine Bottos Olsen, Jytte Banner, Chiara Villa

{"title":"Cranial fluctuating asymmetry and schizophrenia in a contemporary Danish population","authors":"Trine Bottos Olsen, Jytte Banner, Chiara Villa","doi":"10.1016/j.fri.2024.200606","DOIUrl":"10.1016/j.fri.2024.200606","url":null,"abstract":"<div><div>Post-mortem Computed Tomography (PMCT) scans in forensic medicine not only assist with case work but is also a useful data source for other imaging-based research, e.g. morphological studies on bones. PMCT 3D data can be combined with diagnostic information and help to elucidate how disease manifests in the body. For example, the skeleton can be influenced by developmental instability, which may result in a morphological change called fluctuating asymmetry (FA). Developmental instability also influences the risk of developing schizophrenia, which means that individuals with higher levels of developmental instability, and by extension FA, might have a higher risk of developing the disorder. This connection has been investigated in soft tissues but has not yet been investigated in bones. We used PMCT 3D models from a forensic cohort to compare levels of cranial FA between a group of individuals with diagnosed schizophrenia and a control group. Our sample included 48 individuals with diagnosed schizophrenia and 58 controls. We collected 27 landmarks from our 3D models. Levels of fluctuating asymmetry were analysed using Procrustes ANOVA, and the two groups were compared using t-test and Wilcoxon rank sum test. Age and sex were tested as factors using Pearson correlation and two-way ANOVA. We found that there was no statistically significant difference in levels of cranial FA between the schizophrenic group and the control group, and that neither age nor sex was a factor. Our results confirm earlier studies that suggest that the multifactorial aetiology of FA and schizophrenia is difficult to capture comprehensively.</div></div>","PeriodicalId":40763,"journal":{"name":"Forensic Imaging","volume":"39 ","pages":"Article 200606"},"PeriodicalIF":0.8,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142528528","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

Comparison of SEM-EDX and ICP-MS for the analysis of gunshot residues after burial: An experimental study 比较 SEM-EDX 和 ICP-MS 对掩埋后枪弹残留物的分析：实验研究

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Forensic Imaging Pub Date : 2024-08-14 DOI: 10.1016/j.fri.2024.200604

Morgan Nguyen-Hong , Bruno Payré , Sébastien Aries , Fabrice Dedouit , Norbert Telmon , Fréderic Savall , Céline Guilbeau-Frugier

{"title":"Comparison of SEM-EDX and ICP-MS for the analysis of gunshot residues after burial: An experimental study","authors":"Morgan Nguyen-Hong , Bruno Payré , Sébastien Aries , Fabrice Dedouit , Norbert Telmon , Fréderic Savall , Céline Guilbeau-Frugier","doi":"10.1016/j.fri.2024.200604","DOIUrl":"10.1016/j.fri.2024.200604","url":null,"abstract":"<div><p>Gunshot residues (GSR) analysis can be valuable in a forensic context for distinguishing entry wounds from exit wounds, especially in cases when body alterations prevent macroscopic analysis. Several studies have demonstrated its usefulness in various contexts. However, few studies have examined the retention of GSR under environmental conditions particularly after burial.</p><p>The primary objective of our experimental study is to investigate the retention of GSR after burial and decomposition by using two techniques: SEM-EDX and ICP-MS. Our secondary objective is to determine whether it is still possible to distinguish the entry wounds from the exit ones after 2 months of burial. For this study, we used a bovine model (cow feet), and fired with 7 mm semi-jacketed bullets. We formed several groups, including 3 control groups that hadn't been shot (buried for 2 days and 60 days and one unburied group), 3 test groups that had been shot (one unburied and two buried that were exhumed after 2 days and 60 days of burial).</p><p>The results of our study show that both SEM-EDX and ICP-MS were suitable for detecting particles characteristic of GSR, after 60 days of burial. However, only SEM-EDX could differentiate easily the entry wounds from the exit ones.</p><p>Our experimental study demonstrates that SEM-EDX analysis is suitable in cases where the discovery of a buried body doesn't allow the macroscopic determination of the ballistic trajectory.</p></div>","PeriodicalId":40763,"journal":{"name":"Forensic Imaging","volume":"39 ","pages":"Article 200604"},"PeriodicalIF":0.8,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142164932","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

Sex estimation from mandibular morphometry using discriminant analysis–CT scan based retrospective study 利用判别分析从下颌骨形态估计性别--基于 CT 扫描的回顾性研究

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Forensic Imaging Pub Date : 2024-07-05 DOI: 10.1016/j.fri.2024.200603

Vasanth Lenin , Siddhartha Das , Sunitha V․C․ , Sachit Ganapathy , Prachi Parinita Sahoo

{"title":"Sex estimation from mandibular morphometry using discriminant analysis–CT scan based retrospective study","authors":"Vasanth Lenin , Siddhartha Das , Sunitha V․C․ , Sachit Ganapathy , Prachi Parinita Sahoo","doi":"10.1016/j.fri.2024.200603","DOIUrl":"10.1016/j.fri.2024.200603","url":null,"abstract":"<div><p>It is well known that skeletal characteristics vary among different populations. Sex dimorphic characteristics of the mandible have been reported from studies using either mandible bone or computer tomography (CT) scan images of the mandible to test its efficacy in estimating sex. Mandibular studies for estimating sex in any particular population group may not hold well for different populations owing to inherent geographical variations. With this background, we assessed the validity of mandible measurements from CT scan images to determine sex in the South Indian population. As a part of our study, 11 metric parameters and 1 angular parameter were measured and analyzed. The mean values of all the parameters were significantly higher for males as compared to females. Bigonial breadth indicated the best discriminatory ability of the study. Mandibular angle had the least predictive accuracy among all the discriminant functions studied. We further observed that a combination of parameters gave the best overall classification rate (92.3 %). When the same functions were tested on an independent testing data set, a combination of parameters and bigonial breadth gave the best classification rate (82.1 %) which was consistent. We concluded that the mandible has a high accuracy for sex estimation. All the parameters studied demonstrated statistically significant differences between the two sexes except the mandibular angle.</p></div>","PeriodicalId":40763,"journal":{"name":"Forensic Imaging","volume":"38 ","pages":"Article 200603"},"PeriodicalIF":0.8,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141622689","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

Asphyxiation due to acute complications of cervical goitre- a rare case with a brief review of literature 宫颈甲状腺肿急性并发症导致的窒息--一例罕见病例及文献综述

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Forensic Imaging Pub Date : 2024-06-20 DOI: 10.1016/j.fri.2024.200602

G Gokul , Abilash Srinivasa Murthy , Abhishek Yadav , Sudheer Arava , Sudhir. K. Gupta , Shivangi Dagar

引用次数: 0