利用死前和死后头骨 CT 扫描进行稳健安全识别的识别评分。

IF 2.2 3区 医学 Q1 MEDICINE, LEGAL International Journal of Legal Medicine Pub Date : 2024-11-04 DOI:10.1007/s00414-024-03361-6
Marie-Edith Richard, Corentin Provost, Tania Delabarde, Pauline Iorio, Yves Menu, Ghazi Hmeydia, Bertrand Ludes, Catherine Oppenheim, Joseph Benzakoun
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引用次数: 0

摘要

由于其独特的解剖结构,副鼻窦已被用于死后 CT(PMCT)和死前 CT(AMCT)之间的对比鉴定。然而,在传输疑似身份的原始 AMCT 图像时会出现数据安全问题。本研究的目的是根据从连续 CT 中提取的 CT 切片,推导并验证用于识别受试者的识别评分。在推导过程中,我们纳入了接受两次连续 AMCT 检查、间隔时间≥ 1 年的患者(n = 98),由 4 位放射科医生分别评估预先指定的 CT 切片(以乙状窦、额窦和左半环状窦为中心)的相似性。我们计算了所有读片人数和切片组合的预测值,并选出了最佳折衷值,称为 IDScore。为了进行验证,我们纳入了 2018 年至 2022 年期间进行的 PMCT 和可用的头部 AMCT 对比(n = 27)。每个 PMCT 都进行了 5 次对比程序:1个一致的(与相应的AMCT)和4个不一致的(与随机选择的AMCT)。两名放射科医生对乙状舌骨和额叶 CT 切片的相似度进行评估,评分范围为 -2 至 +2。IDScore 被定义为这些切片分数的总和,由两名读片员平均计算。在 135 个对比程序中,IDScore 采用预定阈值(IDScore > + 2 为阳性识别,IDScore > + 2 为阴性识别)。
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Identification score for robust and secure identification using ante- and post-mortem skull CT scans.

Due to their unique anatomy, paranasal sinuses have been used for comparative identification between post-mortem CT (PMCT) and ante-mortem CT (AMCT). However, data security issues arise when transferring raw AMCT images of a suspected identity. The aim of this study was to derive and validate an identification score based on CT slices extracted from successive CTs for the identification of subjects. For derivation procedure, we included patients who underwent two successive AMCTs at ≥ 1-year interval (n = 98), and 4 radiologists individually assessed similarity of prespecified CT slices (centered on ethmoid, frontal sinus and Left Semi-Circular Canal). Predictive values were calculated for all combinations of number of readers and slices, and the optimal compromise, termed IDScore, was selected. For validation, we included PMCTs performed between 2018 and 2022 with available comparative head AMCTs (n = 27). For each PMCT, 5 comparison procedures were performed: 1 concordant (with corresponding AMCT) and 4 discordant (with randomly selected AMCTs). Two radiologists evaluated similarity of ethmoid and frontal CT slices with a score ranging from -2 to + 2. IDScore was defined as the sum of these slice scores, averaged between the two readers. In the 135 comparison procedures, IDScore using predetermined thresholds (positive identification for IDScore >  + 2, negative identification for IDScore < -1) allowed a perfect discrimination between identical subjects (Sensitivity = 100%, Specificity = 100%). IDScore could be used for remote identification of a subject with no need to access to the complete raw AMCT images, hence helping to overcome ethical and regulatory issues to access AMCT of a suspected identity.Trial registration: F20220729161623 on Health Data Hub, registered on 29 July 2022.

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来源期刊
CiteScore
5.80
自引率
9.50%
发文量
165
审稿时长
1 months
期刊介绍: The International Journal of Legal Medicine aims to improve the scientific resources used in the elucidation of crime and related forensic applications at a high level of evidential proof. The journal offers review articles tracing development in specific areas, with up-to-date analysis; original articles discussing significant recent research results; case reports describing interesting and exceptional examples; population data; letters to the editors; and technical notes, which appear in a section originally created for rapid publication of data in the dynamic field of DNA analysis.
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