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Unveiling the diagnostic accuracy of PMCT: Detection of pneumonia considering postmortem changes and time intervals
IF 0.8
Forensic Imaging Pub Date : 2024-11-20 DOI: 10.1016/j.fri.2024.200617
Max G. Mentink , Bartholomeus G.H. Latten , Frans C.H. Bakers , Casper Mihl , Lisa M. Hillen , Paul A.M. Hofman
{"title":"Unveiling the diagnostic accuracy of PMCT: Detection of pneumonia considering postmortem changes and time intervals","authors":"Max G. Mentink ,&nbsp;Bartholomeus G.H. Latten ,&nbsp;Frans C.H. Bakers ,&nbsp;Casper Mihl ,&nbsp;Lisa M. Hillen ,&nbsp;Paul A.M. Hofman","doi":"10.1016/j.fri.2024.200617","DOIUrl":"10.1016/j.fri.2024.200617","url":null,"abstract":"<div><h3>Purpose</h3><div>Postmortem CT (PMCT) faces challenges in assessing lung parenchyma due to images being acquired in expiratory state, leading to varying severity of pulmonary edema redistribution with gravity-dependent attenuation ranging from ground glass to full opacification. This retrospective study assessed the effect of gravity-dependent attenuation and the postmortem time interval (PTI) on the diagnostic accuracy of PMCT for detecting acute pneumonia.</div></div><div><h3>Materials and methods</h3><div>Deceased patients who underwent PMCT and autopsy were included. Consensus evaluations by two radiologists and two pathologists re-examined images and histological samples of separate lung lobes. Scores were assigned for radiological and histological findings, including the presence of acute pneumonia, gravity-dependent attenuation severity, and pulmonary edema. PTI was calculated and correlated with gravity-dependent attenuation severity. Crosstabs were created to calculate diagnostic parameters.</div></div><div><h3>Results</h3><div>Fifty-seven patients were included, with four excluded and 44 fully opacified lung lobes. 168 lung lobes remained for analysis. The average PTI was 22 hours and 47 min. A weak correlation was observed between PTI and gravity-dependent attenuation severity (τb = 0.125, p = 0.016). Acute pneumonia prevalence was 24,4 %, with sensitivity and specificity of PMCT for all lung lobes at 31,71 % and 85,83 %, respectively. PMCT performed better in subgroups with none or slight gravity-dependent attenuation and in patients scanned within 16 hours after death.</div></div><div><h3>Conclusion</h3><div>Interpretation of lung parenchyma with PMCT is challenging. Statistical power was limited due to a limited sample size. PMCT is more suited for excluding acute pneumonia than detecting its presence. Prolonging PTI should be avoided, as increasing gravity-dependent attenuation severity over time limits PMCT sensitivity.</div></div>","PeriodicalId":40763,"journal":{"name":"Forensic Imaging","volume":"40 ","pages":"Article 200617"},"PeriodicalIF":0.8,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142745450","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
Closed iris, long exposure photography improves three-dimensional photogrammetric bone reconstructions 闭合虹膜长曝光摄影改进了三维摄影测量骨骼重建
IF 0.8
Forensic Imaging Pub Date : 2024-11-20 DOI: 10.1016/j.fri.2024.200618
Emma C. Klein, Jasmine C. Feddema, Loren Z.F. Chiu
{"title":"Closed iris, long exposure photography improves three-dimensional photogrammetric bone reconstructions","authors":"Emma C. Klein,&nbsp;Jasmine C. Feddema,&nbsp;Loren Z.F. Chiu","doi":"10.1016/j.fri.2024.200618","DOIUrl":"10.1016/j.fri.2024.200618","url":null,"abstract":"<div><div>Three-dimensional (3D) photogrammetry is being increasingly used for digital reconstruction of physical objects. There has been limited investigation on how picture quality influences 3D photogrammetric reconstructions. The purpose of this research was to experimentally compare reconstructions generated from images taken with larger versus smaller iris openings. Four cadaveric feet (2 left and 2 right) from 2 cadavers were dissected, removing skin, fascia, and muscles. Pictures were taken with the feet placed upright on a turntable. For each foot, 24 pictures were taken at f/3.2 (open iris) and f/11 (closed iris), with respective exposure time and ISO determined using a photography light meter. Bones were digitally reconstructed and the talar dome was visually compared between open versus closed iris reconstructions. Closed iris reconstructions more accurately represented the talar dome, for example having gradual and smooth curved transition between the top surface and the medial and lateral sides. Open iris reconstructions had greater distortion, such as sharp, bulging edges on these transitions. To increase the quality of 3D photogrammetric digital reconstructions, a closed iris, restricting only focused light to pass through the camera's iris to the sensor is recommended. Using a closed iris may be particularly important for bone surfaces covered with hyaline cartilage.</div></div>","PeriodicalId":40763,"journal":{"name":"Forensic Imaging","volume":"39 ","pages":"Article 200618"},"PeriodicalIF":0.8,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142704081","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 surgical approaches in the 21st Century Identified Skeletal Collection 21 世纪的颅骨外科手术方法 已鉴定的骨骼藏品
IF 0.8
Forensic Imaging Pub Date : 2024-11-20 DOI: 10.1016/j.fri.2024.200616
Maria Teresa Ferreira , Catarina Coelho , Rosa Ramos Gaspar , Daniela P. de Matos , Ricardo Pereira , Eugénia Cunha , Inês Oliveira-Santos
{"title":"Cranial surgical approaches in the 21st Century Identified Skeletal Collection","authors":"Maria Teresa Ferreira ,&nbsp;Catarina Coelho ,&nbsp;Rosa Ramos Gaspar ,&nbsp;Daniela P. de Matos ,&nbsp;Ricardo Pereira ,&nbsp;Eugénia Cunha ,&nbsp;Inês Oliveira-Santos","doi":"10.1016/j.fri.2024.200616","DOIUrl":"10.1016/j.fri.2024.200616","url":null,"abstract":"<div><div>In Forensic Anthropology, identification is comparing information from a person whose fate and whereabouts are unknown with data from a person who is present but whose identity is unknown. The rarer and more distinctive the characteristics observed during the anthropological investigation, the greater the probability of reaching an identification. Taking this into account, cranial surgeries can be considered good individualization factors. The cases of skulls with lesions compatible with surgical procedures from the 21st Century Identified Skeletal Collection are presented, and their identification potential is discussed. This collection comprises 302 adult individuals, of which four females (aged 55 to 94 years) and four males (aged 67 to 92 years) present cranial lesions of surgical origin. The results of the macroscopic and imaging analyses (conventional x-rays and CTs) are presented, along with a detailed description and location of each lesion. In five cases there is clear evidence of bone remodelling. This research, which combines anthropological analysis with imaging and neurosurgical insights, demonstrates the importance of correctly interpreting these lesions, illustrating how important is a complete and interdisciplinary analysis for forensic expertise.</div></div>","PeriodicalId":40763,"journal":{"name":"Forensic Imaging","volume":"40 ","pages":"Article 200616"},"PeriodicalIF":0.8,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142723929","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
Exploring lightweight convolution neural networks for segmenting striation marks from firearm bullet images 探索从枪支子弹图像中分割条纹痕迹的轻量级卷积神经网络
IF 0.8
Forensic Imaging Pub Date : 2024-11-13 DOI: 10.1016/j.fri.2024.200611
Genevieve Chyrmang , Barun Barua , Kangkana Bora , R. Suresh
{"title":"Exploring lightweight convolution neural networks for segmenting striation marks from firearm bullet images","authors":"Genevieve Chyrmang ,&nbsp;Barun Barua ,&nbsp;Kangkana Bora ,&nbsp;R. Suresh","doi":"10.1016/j.fri.2024.200611","DOIUrl":"10.1016/j.fri.2024.200611","url":null,"abstract":"<div><div>In the field of forensic ballistic science, the identification of firearms is accomplished by examining the class and individual distinctive marks of fired bullets or cartridge casings instances discovered at the crime scene. The distinctive striation mark, which is engraved on bullets by gun barrels while firing owing to rifling, is one of the important characteristics examined. These striation marks serve as “fingerprints” of firearms. However, manual identification is time-consuming and arduous, necessitating the need for automation. This study focuses on automating striation mark segmentation using novel lightweight deep-learning segmentation models. The motivation behind this study is two-fold: first to assess if lightweight models can replace larger models without sacrificing accuracy and secondly to leverage their efficiency for resource-limited hardware, paving the way for real-time solutions. Proposed models include Mobile Striation-Net (MSN), Attention Gatted MobileStriation-Net (AMSN), Depthwise Attention Gatted Mobile Striation-Net (D-AMSN), and two derivatives of it, which are a pruned version and a quantized variant named PD-AMSN and QD-AMSN respectively. Extensive evaluation of models includes metrics Accuracy, Dice coefficient, Intersection over Union (IOU), Precision, and Recall. A thorough comparative analysis takes into account all models based on parameter counts, frames per second, inference time, and size. Findings shows, all models attains above 95% Accuracy. Dice coefficient and IOU ranges from 0.48 to 0.54 &amp; 0.59 to 0.6 respectively. Precision and Recall consistently range between 63.42% to 64.26% and 73.6% to 77.68% respectively. The “Pruned” variant PD-AMSN performs notably better across metrics than the D-AMSN model demonstrating effective pruning. On the other hand, quantized QD-AMSN have only 6 MB size and 95.42% accuracy. Our models are positioned as forerunners in terms of lightweight design, attention gate integration, decreased parameter counts, and improved accuracy when compared to other previous models. The effectiveness of our models for segmentation tasks and their potential for developing into a portable, real-time automated striation mark segmentation systems in the future, are highlighted through the in-depth analysis.</div></div>","PeriodicalId":40763,"journal":{"name":"Forensic Imaging","volume":"39 ","pages":"Article 200611"},"PeriodicalIF":0.8,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142654748","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
Age estimation based on sternebral fusion in a sample of Egyptian population using three-dimensional computed tomography scanning 利用三维计算机断层扫描技术,根据埃及人口样本的胸骨融合度估算年龄
IF 0.8
Forensic Imaging Pub Date : 2024-11-10 DOI: 10.1016/j.fri.2024.200613
Mona M. Ghonem , Basma S. Eldeeb , Ashraf M. Elaggan , Heba I. Lashin
{"title":"Age estimation based on sternebral fusion in a sample of Egyptian population using three-dimensional computed tomography scanning","authors":"Mona M. Ghonem ,&nbsp;Basma S. Eldeeb ,&nbsp;Ashraf M. Elaggan ,&nbsp;Heba I. Lashin","doi":"10.1016/j.fri.2024.200613","DOIUrl":"10.1016/j.fri.2024.200613","url":null,"abstract":"<div><h3>Objectives</h3><div>Age estimation is a critical medico-legal issue in forensic medicine and sternebral fusion is recently supposed to be a helpful tool. Multidetector computed tomography (MDCT) scanning could provide three-dimensional (3D) imaging of the sternebral fusion. This study aimed to develop age estimation models based on the sternebral fusion state using MDCT scanning in a sample of Egyptians.</div></div><div><h3>Material and Methods</h3><div>The study included thoracic MDCT images of 261 Egyptians. The stage of sternebral fusion was evaluated in the 3D reconstructed images generated using Vitrea® software. Fusion between sternebrae 1&amp;2, sternebrae 2&amp;3, and sternebrae 3&amp;4 were staged as non-fusion, partial fusion, and complete fusion. Scores 1, 2, and 3 were given to the three stages, respectively and their sum was the total sternebral fusion score.</div></div><div><h3>Results</h3><div>Significant positive correlations were observed between all sternebral fusions and the participants’ chronological age. Stages of sternebral fusion significantly contributed to age estimation using simple and multiple linear regression models (<em>P</em> &lt; 0.001 for each). Using calibration curves, the total sternebral fusion score and the multivariate models had the best performance to predict the chronological age. At cut-off &gt; 6, total sternebral fusion score was an excellent predictor for the age of 18 with areas under the curve = 0.943 and 0.952, in females and males respectively.</div></div><div><h3>Conclusion</h3><div>The developed models based on sternebral fusion stages can be used for forensic age estimation in the studied Egyptian sample. A total sternebral fusion score &gt; 6 efficiently distinguished those aged 18 years.</div></div>","PeriodicalId":40763,"journal":{"name":"Forensic Imaging","volume":"39 ","pages":"Article 200613"},"PeriodicalIF":0.8,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142654749","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
Flaring up the mesentery: Applying the LODOX eXero-DR® statscan for expedited postmortem angiography. 翻开肠系膜:应用 LODOX eXero-DR® statscan 快速进行死后血管造影。
IF 0.8
Forensic Imaging Pub Date : 2024-11-09 DOI: 10.1016/j.fri.2024.200614
Zandré Smith , Elrinda de Bruin , Ilze Mentoor , Janette Verster
{"title":"Flaring up the mesentery: Applying the LODOX eXero-DR® statscan for expedited postmortem angiography.","authors":"Zandré Smith ,&nbsp;Elrinda de Bruin ,&nbsp;Ilze Mentoor ,&nbsp;Janette Verster","doi":"10.1016/j.fri.2024.200614","DOIUrl":"10.1016/j.fri.2024.200614","url":null,"abstract":"<div><h3>Rationale</h3><div>The affordable LODOX eXero-DR® statscan aids Forensic Pathologists in resource-constrained settings. Post-mortem angiography using LODOX eXero-DR® assists in detecting vascular pathology, therefore enhancing routine autopsies.</div></div><div><h3>Objective</h3><div>Demonstrating the feasibility of performing postmortem angiography using the LODOX eXero-DR® statscan.</div></div><div><h3>Methods</h3><div>We present a case of a 63-year-old male with follicular lymphoma who experienced small bowel perforation 11 days after a mesenteric lymph node biopsy.</div></div><div><h3>Results</h3><div>A post-mortem examination confirmed lymphadenopathy and bowel perforation, prompting an investigation into the underlying cause. During the post-mortem, the mesentery was excised, exposing the Superior Mesenteric Artery origin. Contrast medium was injected into the artery using a Foley catheter in 5 ml increments, followed by LODOX eXero-DR® imaging. This process was repeated five times, pinpointing the vascular obstruction site. Angiography with LODOX eXero-DR® yielded vital information, aiding pathology identification and record creation.</div></div><div><h3>Conclusion</h3><div>This case demonstrates the potential of angiography with emerging technologies, assisting countries lacking access to PMCT angiography. Notably, this represents the inaugural documentation of LODOX eXero-DR® statscan use in post-mortem angiography.</div></div>","PeriodicalId":40763,"journal":{"name":"Forensic Imaging","volume":"39 ","pages":"Article 200614"},"PeriodicalIF":0.8,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142654745","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
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
IF 0.8
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 ,&nbsp;Se-min Oh ,&nbsp;Sung Wook Choi ,&nbsp;Man-Seok Han ,&nbsp;Jang Gyu Cha ,&nbsp;Heon Lee ,&nbsp;Minju Lee ,&nbsp;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&lt;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&lt;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&lt;0.0001) for the 120-kVp scan, 1.35±0.070 mSv (p&lt;0.0001) for the 100-kVp scan, and 0.72±0.48 mSv (p&lt;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
IF 0.8
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 ,&nbsp;Bruno Payré ,&nbsp;Sébastien Aries ,&nbsp;Stéphane Grill ,&nbsp;Sarah Galland ,&nbsp;Lise Pestourie ,&nbsp;Fabrice Dedouit ,&nbsp;Norbert Telmon ,&nbsp;Fréderic Savall ,&nbsp;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
IF 0.8
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 ,&nbsp;Seiji Shiotani ,&nbsp;Kento Inoue ,&nbsp;Yukio Kosako ,&nbsp;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
IF 0.8
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 ,&nbsp;Anna Laura Santunione ,&nbsp;Stefano Draisci ,&nbsp;Drago Antonella ,&nbsp;Maria Grazia Amorico ,&nbsp;Guido Ligabue ,&nbsp;Enrico Silingardi ,&nbsp;Pietro Torricelli ,&nbsp;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}
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