High diagnostic accuracy of postmortem CT for hemothorax with volume estimation challenges: A comparative study with autopsy

IF 0.8 Q4 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING

Forensic Imaging Pub Date : 2025-04-17 DOI:10.1016/j.fri.2025.200626

Punpramepree Yeesakhorn , Wanlapha Tungsub , Nitima Saksobhavivat , Wisarn Worasuwannarak

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引用次数: 0

Abstract

Background

Estimating hemothorax volume via postmortem computed tomography (PMCT) remains challenging because of postmortem artifacts that can impact interpretation and accuracy. This study aimed to evaluate the accuracy of PMCT in estimating hemothorax volume compared with standard autopsy.

Methods

Forty deceased individuals who underwent both PMCT and autopsy were examined. PMCT volumes were manually segmented, and the results were compared with autopsy findings. Spearman's rank correlation and paired t-tests were used to assess accuracy.

Results

PMCT showed a high diagnostic accuracy for hemothorax, with correlation coefficients of 0.859 and 0.794 on the left and right sides, respectively. However, the mean absolute percentage error (MAPE) for volume estimation was relatively high, suggesting caution when relying solely on PMCT for volume estimation.

Conclusion

PMCT is a reliable tool for diagnosing hemothorax; however, its accuracy in volume estimation remains limited for manual segmentation methods. Further refinement of the imaging techniques is required for more precise volume measurements.

Abstract Image

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死后 CT 对血气胸的诊断准确性很高，但存在体积估计方面的挑战：与尸检的比较研究

通过死后计算机断层扫描（PMCT）估计胸血容量仍然具有挑战性，因为死后的伪影会影响解释和准确性。本研究旨在评估PMCT与标准尸检相比在估计胸血容量方面的准确性。方法对40例同时进行PMCT和尸检的死者进行分析。人工分割PMCT体积，并将结果与尸检结果进行比较。使用Spearman秩相关和配对t检验来评估准确性。结果spmct对血胸的诊断准确率较高，左右两侧的相关系数分别为0.859和0.794。然而，体积估计的平均绝对百分比误差（MAPE）相对较高，建议仅依靠PMCT进行体积估计时要谨慎。结论pmct是诊断血胸的可靠工具；然而，对于人工分割方法，其体积估计的准确性仍然有限。为了更精确地测量体积，需要进一步改进成像技术。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Forensic Imaging RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING-

CiteScore

2.20

自引率

27.30%

发文量