Journal of forensic sciences最新文献_第9页

Barbie drug identification: Not a child's play 芭比娃娃毒品鉴定：不是儿戏

IF 1.5 4区医学

Journal of forensic sciences Pub Date : 2024-09-20 DOI: 10.1111/1556-4029.15633

Marine Deville PhD, Corinne Charlier PhD

{"title":"Barbie drug identification: Not a child's play","authors":"Marine Deville PhD, Corinne Charlier PhD","doi":"10.1111/1556-4029.15633","DOIUrl":"10.1111/1556-4029.15633","url":null,"abstract":"Various samples—including two vials with a pharmaceutical appearance—were submitted to the laboratory for identification. The aim of this work was to describe the unique characteristics observed during the analysis of the powder contained in the vial. Samples were submitted to HPLC-DAD, UHPLC-TOF-MS, and/or UPLC-MS–MS analysis. The majority of the samples were easily identified as standard drugs of abuse. The main difficulty lay in identifying the powder in the vials. No match was found in the library through HPLC-DAD analysis. Fortunately, the vials were labeled as “Melanotan II”, although the UV spectrum was not available. Mass spectrometric analysis of melanotan II was challenging, as it is a small peptide with a molecular weight of 1024 Da, which is significantly heavier than classical drugs that the laboratory usually handles. As a result, mass spectrometer's parameters can be limited to detect masses up to 1000 Da. Additionally, melanotan II is multi-charged which is also unusual for compounds typically targeted in our daily work. Finally, the reference standard allowed us to confirm the identification with both instruments, and determine the purity of 30%. Melanotan II is not approved on the market due to safety concerns. It is used illegally mainly for tanning, explaining its nickname “Barbie drug”. To conclude, analysis of melanotan II was challenging as it is heavy and doubly charged. Moreover, its UV spectrum was initially not available in the literature. The difficulties faced by forensic scientists in detecting this drug may explain its popularity on the illicit market.","PeriodicalId":15743,"journal":{"name":"Journal of forensic sciences","volume":"69 6","pages":"2331-2338"},"PeriodicalIF":1.5,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142304960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

DentAge: Deep learning for automated age prediction using panoramic dental X-ray images DentAge：利用全景牙科 X 光图像进行自动年龄预测的深度学习。

IF 1.5 4区医学

Journal of forensic sciences Pub Date : 2024-09-18 DOI: 10.1111/1556-4029.15629

Žiga Bizjak PhD, Tina Robič DMD

{"title":"DentAge: Deep learning for automated age prediction using panoramic dental X-ray images","authors":"Žiga Bizjak PhD, Tina Robič DMD","doi":"10.1111/1556-4029.15629","DOIUrl":"10.1111/1556-4029.15629","url":null,"abstract":"Age estimation plays a crucial role in various fields, including forensic science and anthropology. This study aims to develop and validate DentAge, a deep-learning model for automated age prediction using panoramic dental X-ray images. DentAge was trained on a dataset comprising 21,007 panoramic dental X-ray images sourced from a private dental center in Slovenia. The dataset included subjects aged 4 to 97 years with various dental conditions. Transfer learning was employed, initializing the model with ImageNet weights and fine-tuning on the dental image dataset. The model was trained using stochastic gradient descent with momentum, and mean absolute error (MAE) served as the objective function. Across the test dataset, DentAge achieved an MAE of 3.12 years, demonstrating its efficacy in age prediction. Notably, the model performed well across different age groups, with MAEs ranging from 1.94 (age group [10–20]) to 13.40 years (age group [90–100]). Visual evaluation revealed factors contributing to prediction errors, including prosthetic restorations, tooth loss, and bone resorption. DentAge represents a significant advancement in automated age prediction within dentistry. The model's robust performance across diverse age groups and dental conditions underscores its potential utility in real-world scenarios. Our model will be accessible to the public for further adjustments and validation, ensuring DentAge's effectiveness and trustworthiness in practical scenarios.","PeriodicalId":15743,"journal":{"name":"Journal of forensic sciences","volume":"69 6","pages":"2069-2074"},"PeriodicalIF":1.5,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1556-4029.15629","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142268993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis of unique atypical screwdriver injuries 独特的非典型螺丝刀损伤分析

IF 1.5 4区医学

Journal of forensic sciences Pub Date : 2024-09-17 DOI: 10.1111/1556-4029.15610

Francisco Reyes Albaladejo MS, Benjamin J. Soriano MD, Lorenzo Gitto MD

{"title":"Analysis of unique atypical screwdriver injuries","authors":"Francisco Reyes Albaladejo MS, Benjamin J. Soriano MD, Lorenzo Gitto MD","doi":"10.1111/1556-4029.15610","DOIUrl":"10.1111/1556-4029.15610","url":null,"abstract":"Fatalities caused by sharp and pointed instruments, especially screwdrivers, are not frequently observed in the United States. The shape of the screwdriver tip generally determines the resulting wounds that can range from linear, to rectangular or cross-shaped, often reflecting common screwdriver head shapes. Recognizing such patterns is crucial, as they can aid in identifying the potential weapon used in the crime. In the reported case, an adult male was found dead in his living room surrounded by a pool of blood, with multiple injuries. At autopsy, the pattern of penetration was consistent with that of a six-point star (Torx) screwdriver, which has never been reported as a deadly weapon in the literature before. A Torx screwdriver has a blunt head, resulting in hybrid injuries with both penetrating and blunt force features. Because of its rigid structure and narrow tip, a Torx screwdriver may forcefully penetrate the skin, soft tissues, and bone, causing severe injuries to the deep organs. The case highlights the importance for the forensic pathologist to examine and recognize atypical penetrating wounds for the identification and location of rare weapons. High-definition graphic documentation of the injuries allows thorough examination and comparison of injuries with potential weapons. When the weapon is not retrieved, detailed injury descriptions guide investigations toward searching for a screwdriver, improving the chances of identifying the weapon used to commit the crime.","PeriodicalId":15743,"journal":{"name":"Journal of forensic sciences","volume":"69 6","pages":"2302-2307"},"PeriodicalIF":1.5,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142255020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation of isotopic linkages between raw materials and black powder 原材料与黑火药之间同位素联系的研究。

IF 1.5 4区医学

Journal of forensic sciences Pub Date : 2024-09-15 DOI: 10.1111/1556-4029.15615

Can Hu PhD, Yang Huang MSc, Hongcheng Mei PhD, Hongling Guo PhD, Ping Wang MSc, Yajun Li MSc, Xianhe Deng MSc, Jun Zhu PhD

{"title":"Investigation of isotopic linkages between raw materials and black powder","authors":"Can Hu PhD, Yang Huang MSc, Hongcheng Mei PhD, Hongling Guo PhD, Ping Wang MSc, Yajun Li MSc, Xianhe Deng MSc, Jun Zhu PhD","doi":"10.1111/1556-4029.15615","DOIUrl":"10.1111/1556-4029.15615","url":null,"abstract":"The stable isotope analysis of black powder (BP) is of great significance for its comparison and source inference. Previous studies have verified the feasibility of distinguishing different BP samples through stable isotopes. However, the impact of raw materials and synthesis processes on the stable isotopes of BP remains unclear. On the one hand, the raw materials of BP are widely sourced, and whether stable isotopes can distinguish different source materials remains to be studied. On the other hand, the synthesis of BP involves the physical mixing of raw materials, and whether this process leads to isotope fractionation also needs further investigation. To address these problems, stable isotope ratios of 27 charcoals, 15 potassium nitrates, 6 self-made and 10 commercial BP samples were analyzed. The results showed that the stable isotope ratios can be utilized to distinguish charcoals and potassium nitrates from different manufacturers and batches. No significant differences in the nitrogen and oxygen stable isotope ratios between the self-made BP and its raw materials were observed, indicating that the physical mixing process does not induce significant fractionation of stable isotopes. However, the carbon stable isotope ratios of charcoal increased (within 2SD) after being synthesized into BP. Due to the utilization of additives and variations in the synthesis process, the correlation between the stable isotope ratios of commercial BP and its raw materials was complex. The findings of this study provide a scientific reference for tracing the source of BP.","PeriodicalId":15743,"journal":{"name":"Journal of forensic sciences","volume":"69 6","pages":"2018-2027"},"PeriodicalIF":1.5,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142304963","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Police vehicle contamination by inorganic gunshot residue (iGSR) in Zagreb County Police Administration (Croatia): Analysis of characteristic and indicative particles across different vehicle parts and contributory risk factors 萨格勒布县警察局（克罗地亚）警车受无机枪弹残留物 (iGSR) 污染的情况：对不同车辆部件的特征性和指示性颗粒以及促成风险因素的分析。

IF 1.5 4区医学

Journal of forensic sciences Pub Date : 2024-09-15 DOI: 10.1111/1556-4029.15628

Hrvoje Senješ MSc, Sunčica Kuzmić MSc, Ivan Jerković PhD

{"title":"Police vehicle contamination by inorganic gunshot residue (iGSR) in Zagreb County Police Administration (Croatia): Analysis of characteristic and indicative particles across different vehicle parts and contributory risk factors","authors":"Hrvoje Senješ MSc, Sunčica Kuzmić MSc, Ivan Jerković PhD","doi":"10.1111/1556-4029.15628","DOIUrl":"10.1111/1556-4029.15628","url":null,"abstract":"Inorganic gunshot residue (iGSR) analysis, crucial for linking suspects to firearm use, faces challenges from potential environmental contamination, notably in police vehicles. The present study aimed to explore the level of iGSR contamination in police vehicles from the Zagreb County Police Administration (Croatia), considering particle types and their position in vehicles, and to identify associated risk factors. From December 2021 to April 2022, 65 of 86 police vehicles (margin of error: ±6% at a 95% confidence level) were sampled with GSR stubs on the drivers' seats, back seats, and backrests and analyzed using scanning electron microscopy and energy dispersive x-ray analysis (SEM/EDX). Characteristic particles were found in 63.1% of vehicles, 33.8% on the driver's seat, and 24.6% on the back seat/backrest. Indicative particles were found in 70.77% of vehicles, with a fairly even distribution. McNemar's chi-square analysis showed no significant disparities in positive sample ratios across vehicle parts or particle types (p > 0.05). In total, 228 characteristic and 166 indicative GSR particles were identified, with no notable correlation among them (p = 0.346). Logistic regression analysis identified the transportation of individuals involved in firearms incidents as a statistically significant factor influencing the presence of characteristic particles (p = 0.030). The findings suggest a considerable prevalence of iGSR in the analyzed Police Administration unit, highlighting the need for careful contamination management in police operations to preserve evidence integrity, particularly in cases when individuals who used firearms had been transported in the vehicle.","PeriodicalId":15743,"journal":{"name":"Journal of forensic sciences","volume":"69 6","pages":"2230-2239"},"PeriodicalIF":1.5,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142304964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An analysis of 105 female-perpetrated mass murders 对 105 起女性实施的大规模谋杀案的分析

IF 1.5 4区医学

Journal of forensic sciences Pub Date : 2024-09-11 DOI: 10.1111/1556-4029.15627

Ragy R. Girgis MD, Dung Hoang MA, Hannah Hesson BA, Gabriella Dishy MA, Kathryn Lee MA, Tyler Pia MA, Faizan Syed MD, Alexandra Villalobos MA, Paul S. Appelbaum MD, Gary Brucato PhD

{"title":"An analysis of 105 female-perpetrated mass murders","authors":"Ragy R. Girgis MD, Dung Hoang MA, Hannah Hesson BA, Gabriella Dishy MA, Kathryn Lee MA, Tyler Pia MA, Faizan Syed MD, Alexandra Villalobos MA, Paul S. Appelbaum MD, Gary Brucato PhD","doi":"10.1111/1556-4029.15627","DOIUrl":"10.1111/1556-4029.15627","url":null,"abstract":"Most research on mass murderers to date has focused on perpetrators of male sex, while research on perpetrators of female sex has been relegated to case reports and series. We aimed to more fully examine the phenomenon of female-perpetrated mass murder. We analyzed 1715 worldwide incidents of personal-cause mass murder from 1900 to 2019, identifying 105 (6%) events perpetrated by females. We defined mass murder as any event involving at least three fatalities, not including the perpetrator, using any method. We identified cases of mass murder from English-language databases of mass murder or murder in print or online. There were no significant differences in age and race between female and male perpetrators. Relative to males, female perpetrators were significantly less likely to employ firearms in their mass murders, using them in less than half of cases, compared to over 70% for males. The prevalence of psychotic signs and symptoms among female mass murderers was more than double that among males (25.7% vs. 12.5%, p < 0.01), while the rate of nonpsychotic psychiatric or neurological conditions was also much greater among female perpetrators (29.5% vs. 17.1%, p < 0.01). Over half of female perpetrators took or attempted to take their own lives. More than three-quarters of mass murders by females involved at least one family member as a victim. This study underscores sex-specific differences in the perpetration of mass murder and the need for further research to understand how insights about such dynamics might lead to the development of more effective and informed intervention policies.","PeriodicalId":15743,"journal":{"name":"Journal of forensic sciences","volume":"69 6","pages":"2120-2126"},"PeriodicalIF":1.5,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142217126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluating cardiac risks of TASER: An in‐depth case study through probable current analysis 评估 TASER 的心脏风险：通过可能的电流分析进行深入案例研究

IF 1.6 4区医学

Journal of forensic sciences Pub Date : 2024-09-11 DOI: 10.1111/1556-4029.15614

Hojeong Seo, Saehan Park, Sanghee Kim, Sookyoung Lee, Changho Choi

{"title":"Evaluating cardiac risks of TASER: An in‐depth case study through probable current analysis","authors":"Hojeong Seo, Saehan Park, Sanghee Kim, Sookyoung Lee, Changho Choi","doi":"10.1111/1556-4029.15614","DOIUrl":"https://doi.org/10.1111/1556-4029.15614","url":null,"abstract":"This study investigates the cardiac safety concerns related to TASER discharges centering on a pivotal case that marked the first TASER‐related fatality in South Korea. Employing Pratt et al.'s theoretical framework, the research evaluates the potential for ventricular fibrillation (VF) from these discharges. The methodology incorporated a high‐resolution waveform analysis using sophisticated equipment and considered specific incident details, including dart impact locations verified through a forensic examination. A human body impedance of 500 Ω, chosen based on empirical studies and coupled with non‐inductive resistance for high‐voltage handling, was utilized in the model. By applying a heart‐current factor from IEC 60479 standards, the study found a VF risk of up to 5% depending on the impact location and current pathways. In this specific case, although the calculated risk did not exceed critical thresholds, the VF risk was high enough to suggest that TASER discharges played a role in the fatal outcome. This study underscores the importance of dart impact location in TASER safety evaluations, contributing to a broader understanding of TASER cardiac risks and providing a basis to advocate for rigorous safety protocols.","PeriodicalId":15743,"journal":{"name":"Journal of forensic sciences","volume":"4 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142217127","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Poisoning with table salt while treating drug poisoning 治疗药物中毒时食盐中毒

IF 1.5 4区医学

Journal of forensic sciences Pub Date : 2024-09-10 DOI: 10.1111/1556-4029.15623

Anna Smędra MD, PhD, Katarzyna Wochna DMD, PhD, Jacek Gruchała MD, PhD, Jarosław Berent MD, PhD

{"title":"Poisoning with table salt while treating drug poisoning","authors":"Anna Smędra MD, PhD, Katarzyna Wochna DMD, PhD, Jacek Gruchała MD, PhD, Jarosław Berent MD, PhD","doi":"10.1111/1556-4029.15623","DOIUrl":"10.1111/1556-4029.15623","url":null,"abstract":"Hypernatremia is an increase in serum sodium concentration above 145 mmol/L. There are many causes of elevated sodium levels in the blood serum. One is incorrect actions performed by medical staff. The symptoms of excessively high serum sodium levels depend on the severity of hypernatremia, the rate of its increase and the accompanying volume disorders. Severe symptoms include altered consciousness, increased muscle tone and reflexes, convulsions, psychomotor hyperactivity or drowsiness (up to coma), respiratory failure, and even death. We present the case of a 45-year-old man who took seven tablets of a blood pressure-lowering drug, and paramedics subsequently administered a concentrated solution of table salt to induce vomiting. However, vomiting did not occur, leading to hypernatremia. Ultimately, the man survived but developed persistent cognitive dysfunction, including disordered short-term memory and encoding and retrieval of information from long-term memory, weakening of attention function and fatigue, and disorders in abstract thinking. The patient's family went to the prosecutor's office to investigate the possibility of medical malpractice. Experts found that the paramedics' actions were incorrect. Although it has been known for many years that table salt solutions should not be used to induce vomiting, unfortunately, both laypeople and medical professionals are still using this technique. Iatrogenic salt poisoning may end not only in serious health complications but also in legal consequences.","PeriodicalId":15743,"journal":{"name":"Journal of forensic sciences","volume":"69 6","pages":"2325-2330"},"PeriodicalIF":1.5,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142217141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Patterns in paternal and maternal filicide: A comparative analysis of filicide cases in Turkey 杀父和杀母的模式：土耳其杀父和杀母案件的比较分析

IF 1.5 4区医学

Journal of forensic sciences Pub Date : 2024-09-10 DOI: 10.1111/1556-4029.15625

Tuba Özcanlı MD, İhsan Okur MD, Cana Aksoy Poyraz MD, Neşe Kocabaşoğlu MD, Hızır Aslıyüksek MD

{"title":"Patterns in paternal and maternal filicide: A comparative analysis of filicide cases in Turkey","authors":"Tuba Özcanlı MD, İhsan Okur MD, Cana Aksoy Poyraz MD, Neşe Kocabaşoğlu MD, Hızır Aslıyüksek MD","doi":"10.1111/1556-4029.15625","DOIUrl":"10.1111/1556-4029.15625","url":null,"abstract":"Filicide is the act of a parent killing their own offspring. Previous studies indicate that there are both commonalities and distinctions between filicides committed by mothers and fathers. The main objective of this study was to compare maternal and paternal filicide with a major focus on clinical and sociodemographic features of perpetrators, incident details, and victims. Filicide cases were examined at the bedded unit of the Expertise Department of Observation of the Council of Forensic Medicine that were referred by the Turkish Ministry of Justice. A total of 51 perpetrators and 57 victims were analyzed from June 2014 to December 2023. The perpetrators were daily face-to-face interviewed by psychiatry and forensic medicine physicians. There were significant differences in sociodemographic characteristics and psychiatric conditions between maternal and paternal cases. Female perpetrators tended to be younger, unemployed, mostly targeted younger victims and used asphyxiation to kill, whereas males tended to target older victims and utilized firearms. The most common primary cause of filicide in maternal cases was “unwanted pregnancy,” whereas “spousal revenge” and “anger or impulsivity” were predominant in paternal filicides. All perpetrators who were not criminally responsible were mothers, mostly diagnosed with psychotic depression. Unwanted pregnancy, psychotic depression, and postpartum psychosis should be assessed when evaluating risk for mothers, especially for infanticide. The desire for revenge on a spouse, often seen with personality disorders, impulsivity and anger, access to firearms should be screened for risk of paternal filicide, particularly in older victims. Early recognition of these factors can help in implementing prevention strategies.","PeriodicalId":15743,"journal":{"name":"Journal of forensic sciences","volume":"69 6","pages":"2110-2119"},"PeriodicalIF":1.5,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1556-4029.15625","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142217128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Visual detection and enhancement of alterations in questioned documents by Mueller polarimetry 利用穆勒偏振测量法对受质疑文件中的篡改进行视觉检测和增强。

IF 1.5 4区医学

Journal of forensic sciences Pub Date : 2024-09-04 DOI: 10.1111/1556-4029.15617

Emanuel Chironi PhD, Claudio Iemmi PhD

{"title":"Visual detection and enhancement of alterations in questioned documents by Mueller polarimetry","authors":"Emanuel Chironi PhD, Claudio Iemmi PhD","doi":"10.1111/1556-4029.15617","DOIUrl":"10.1111/1556-4029.15617","url":null,"abstract":"In this article, we have explored the use of Mueller polarimetry for the detection and enhancement of alterations in questioned documents. Erasures, obliterations (with liquid paper and by pasting an additional layer of paper), and insertions (made with several inks) were studied in both regular and glossy paper. Promising results were obtained, which depend on the type of paper and the relation between the color of the ink and that of the illuminating light source. Erasures are easier to detect in glossy paper than in regular paper. Obliterations with liquid paper produced successful results in both types of paper, while detection of obliterations made with an additional layer of paper led to higher contrast for regular paper. Regarding the insertions, the black ball-point ink could be differentiated from roller-ball and gel-pen ink, which is often difficult to achieve visually. The contrast observed between the two inks was higher for regular paper than for glossy paper. Although the results shown in this article are promising, a wider variety of papers and pen types must be tested to further develop the procedure. It has the advantage of being non-destructive and far more economic than other methods. In some cases, the results can be complementary to those obtained by other methods (e.g., fluorescence with UV excitation and illumination with transmitted and oblique light), while in other cases the method offers unique advantages.","PeriodicalId":15743,"journal":{"name":"Journal of forensic sciences","volume":"69 6","pages":"2275-2289"},"PeriodicalIF":1.5,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142134928","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0