Forensic Imaging最新文献_第2页

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

IF 0.8

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

IF 0.8

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

IF 0.8

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

IF 0.8

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

IF 0.8

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

IF 0.8

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

Development of a novel humerus-clavicle model for sex determination using multi-detector computed tomography scanning in a sample of Egyptian population 在埃及人口样本中利用多载体计算机断层扫描技术开发用于性别鉴定的新型肱骨-锁骨模型

IF 1.1

Forensic Imaging Pub Date : 2024-06-12 DOI: 10.1016/j.fri.2024.200601

Heba I. Lashin , Eman A. Zaki , Amal S.A.F. Hafez , Alaa M. Reda , Abdel-moty M.K. Kabbash

{"title":"Development of a novel humerus-clavicle model for sex determination using multi-detector computed tomography scanning in a sample of Egyptian population","authors":"Heba I. Lashin , Eman A. Zaki , Amal S.A.F. Hafez , Alaa M. Reda , Abdel-moty M.K. Kabbash","doi":"10.1016/j.fri.2024.200601","DOIUrl":"10.1016/j.fri.2024.200601","url":null,"abstract":"<div><h3>Objectives</h3><p>Sex determination is a critical step in personal identification. Both humerus and clavicle bones exhibit apparent sexual dimorphism in different populations. Multi-detector computed tomography (MDCT) scanning has been widely used in forensic sex estimation. It provides accurate bone measurements for the modern living population. This study aimed to develop a novel model to determine sex using MDCT scanning of humerus and clavicle bones in a sample of Egyptian population.</p></div><div><h3>Material and Methods</h3><p>Thoracic MDCT scans of 417 Egyptians of both sexes, aged 10-35 years were included. Three-dimensional volume rendering images were reconstructed using Vitrea® CT workstation. The vertical diameter of right humeral head (VDH) and right clavicular length (CL) were measured for each subject using Radiant DICOM viewer.</p></div><div><h3>Results</h3><p>Both measurements had significantly higher median values among males than females in all age groups above 15 years and were significantly valid for sex estimation. The highest AUC was reported for right VDH, followed by right CL (0.859 and 0.856, respectively). Optimal cut-off points of the right VDH and right CL for predicting males were >40.1 mm and >139.15 mm, respectively. Both studied measurements contributed significantly to univariate and multivariate regression models and gave rise to a novel model that could predict males with 83.5 % overall accuracy.</p></div><div><h3>Conclusion</h3><p>VDH and CL can be effectively used as an alternative in forensic sex estimation when only humerus and clavicle bones can be measured. The developed model can be easily applied by forensic specialists to estimate sex with high accuracy among Egyptian population.</p></div>","PeriodicalId":40763,"journal":{"name":"Forensic Imaging","volume":"38 ","pages":"Article 200601"},"PeriodicalIF":1.1,"publicationDate":"2024-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141395029","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

Analysis of the phenomenon of subdural hematoma observed in postmortem computed tomography disappearing at autopsy 对尸检计算机断层扫描中观察到的硬膜下血肿在尸检时消失现象的分析

IF 1.1

Forensic Imaging Pub Date : 2024-06-10 DOI: 10.1016/j.fri.2024.200600

Nami Tsurushiin , Kazuhiko Kibayashi , Ryo Shimada , Ken-ichiro Nakao

{"title":"Analysis of the phenomenon of subdural hematoma observed in postmortem computed tomography disappearing at autopsy","authors":"Nami Tsurushiin , Kazuhiko Kibayashi , Ryo Shimada , Ken-ichiro Nakao","doi":"10.1016/j.fri.2024.200600","DOIUrl":"https://doi.org/10.1016/j.fri.2024.200600","url":null,"abstract":"<div><h3>Objectives</h3><p>We encountered a case in which an acute subdural hematoma (SDH) was observed on postmortem computed tomography (PMCT) but no hematoma was found under the dura mater during autopsy. Subsequent verification led to the conclusion that the SDH was pressing on the brain when PMCT was performed but was not observed because all the subdural blood drained out during craniotomy because the hematoma did not clot.</p></div><div><h3>Materials and Methods</h3><p>We examined 13 cases of SDH in which PMCT was performed before autopsy to determine the factors related to the presence or absence of blood clots in the SDH, and to determine whether PMCT before autopsy could determine the presence or absence of blood clots in the SDH.</p></div><div><h3>Results</h3><p>Blood clots were not found in the SDH of individuals with an estimated survival interval of 5 h or less or when the estimated survival interval was 1440 h or more. No particular trend was observed in the relationship between the presence or absence of clots in the SDH and HU values of the SDH.</p></div><div><h3>Conclusion</h3><p>Early death after injury and chronic SDH are thought not to contain SDH clots. In cases of early death after injury, the autopsy diagnosis of SDH should be made by careful observation of the fluid SDH during craniotomy, as SDH may not contain clots as an indicator of SDH at autopsy. Predicting the presence or absence of a clot within an SDH using PMCT is difficult.</p></div>","PeriodicalId":40763,"journal":{"name":"Forensic Imaging","volume":"38 ","pages":"Article 200600"},"PeriodicalIF":1.1,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141333005","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

Mobile forensic photogrammetry in the field: Conservative approach to non-collaborative surfaces 实地移动法医摄影测量：非协作表面的保守方法

IF 1.1

Forensic Imaging Pub Date : 2024-05-22 DOI: 10.1016/j.fri.2024.200597

Wolf Schweitzer , Haruki Fukuda , Michael Thali , Stephan Bolliger , Lars Ebert

{"title":"Mobile forensic photogrammetry in the field: Conservative approach to non-collaborative surfaces","authors":"Wolf Schweitzer , Haruki Fukuda , Michael Thali , Stephan Bolliger , Lars Ebert","doi":"10.1016/j.fri.2024.200597","DOIUrl":"10.1016/j.fri.2024.200597","url":null,"abstract":"<div><p>Conventional photogrammetry faces challenges with non-textured, transparent, or reflective surfaces, affecting accurate 3D modeling, particularly in forensic documentation. This study evaluates improvements using lower exposure, exposure bracketing, and RAW format for better 3D modeling of non-textured surfaces. Two bodies were photographed under controlled conditions to assess techniques for non-textured surfaces, with a comparison set for textured surfaces. The experiments were conducted in an autopsy room with a Nikon D5500 camera, adjusting for low exposure, exposure bracketing, RAW format, and increased photo redundancy. Models with Meshroom (Alicevision). Our focus was on visual plausibility rather than quantitative metrics. Results indicated that using RAW format with exposure bracketing and low exposure significantly improved 3D models by reducing artificial edges seen with standard JPG images, despite some noise. A redundant series of RAW photos further reduced edge artifacts and noise, demonstrating the effectiveness of averaging photos to enhance model quality. However, these modifications showed marginal improvements on textured surfaces, underscoring their significant benefits primarily for non-textured surfaces. This study highlights the potential of modified photogrammetry techniques in forensic science, particularly for documenting challenging surfaces. It points out the need for further research, given its limitations in sample size and the absence of extensive parameter testing and quantitative analysis.</p></div>","PeriodicalId":40763,"journal":{"name":"Forensic Imaging","volume":"38 ","pages":"Article 200597"},"PeriodicalIF":1.1,"publicationDate":"2024-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666225624000216/pdfft?md5=83f2f3aafcbd648a9afc0d084809f72d&pid=1-s2.0-S2666225624000216-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141135972","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

Advanced medical imaging for forensic triage: A study of the added value of combining PMCT and PMMR of the head 用于法医分诊的高级医学成像：关于头部 PMCT 和 PMMR 相结合的附加值的研究

IF 1.1

Forensic Imaging Pub Date : 2024-05-11 DOI: 10.1016/j.fri.2024.200598

Ingrid I.H. Haest , Paul A.M. Hofman , Jos P.J. Herbergs , Hans Nelen , Marko Jelicic

{"title":"Advanced medical imaging for forensic triage: A study of the added value of combining PMCT and PMMR of the head","authors":"Ingrid I.H. Haest , Paul A.M. Hofman , Jos P.J. Herbergs , Hans Nelen , Marko Jelicic","doi":"10.1016/j.fri.2024.200598","DOIUrl":"10.1016/j.fri.2024.200598","url":null,"abstract":"<div><h3>Background</h3><p>Approximately 170,000 individuals die annually in the Netherlands. Dutch law mandates examinations to distinguish between natural death and unnatural death. Traditionally, this involves external examinations and an inspection of medical records; however, medical imaging has emerged as a tool for investigating deaths.</p></div><div><h3>Objective</h3><p>The objective of the study was to investigate whether the addition of post-mortem magnetic resonance (PMMR) to post-mortem computed tomography (PMCT) could assist in the categorisation of deaths as natural or unnatural and augment confidence in those classifications.</p></div><div><h3>Methods</h3><p>In this retrospective study, the PMCT and PMMR head images of 50 individuals were evaluated by a forensic radiologist. The impact of PMMR on lesion detection, the cause of death (COD), the differentiation between natural death and unnatural death, and confidence levels were assessed. All available case information was used as the reference standard.</p></div><div><h3>Results</h3><p>The addition of the PMMR led to a statistically significant increase in lesion detection (48%), changes in the classification of COD in four cases, and an increased level of confidence in the classification. Differentiation between natural death and unnatural death reversed in 10 cases, altering the overall manner of death (MOD) classification in 20% of cases.</p></div><div><h3>Conclusion</h3><p>When PMCT indicates a natural or unnatural death, PMMR is unnecessary. PMMR of the head is recommended in situations in which the MOD is uncertain based on PMCT findings. The ultimate determination of a natural death and unnatural death should always take into account the results of external examinations, police investigations, and other available information.</p></div>","PeriodicalId":40763,"journal":{"name":"Forensic Imaging","volume":"37 ","pages":"Article 200598"},"PeriodicalIF":1.1,"publicationDate":"2024-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666225624000228/pdfft?md5=60d36f41128031711f88750f8eee3fda&pid=1-s2.0-S2666225624000228-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141048714","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