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Related Experiment Video

Updated: Apr 29, 2026

Image Rendering Techniques in Postmortem Computed Tomography: Evaluation of Biological Health and Profile in Stranded Cetaceans
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Postmortem lung features in drowning cases on computed tomography.

Akihito Usui1, Yusuke Kawasumi, Masato Funayama

  • 1Department of Diagnostic Image Analysis, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Sendai, 980-8575, Japan, t7402r0506@med.tohoku.ac.jp.

Japanese Journal of Radiology
|May 15, 2014
PubMed
Summary

Postmortem chest computed tomography (CT) can classify drowning features into three main patterns. This study identified distinct CT imaging patterns in drowning cases, aiding forensic analysis.

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Area of Science:

  • Forensic Radiology
  • Medical Imaging
  • Pathology

Background:

  • Forensic autopsy is the standard for determining cause of death.
  • Postmortem imaging, particularly chest computed tomography (CT), offers a non-invasive method to supplement autopsy findings.
  • Drowning is a significant cause of accidental death, and its postmortem imaging characteristics require detailed classification.

Purpose of the Study:

  • To compare postmortem chest CT features in drowning cases with established autopsy findings.
  • To develop a classification system for postmortem chest CT imaging patterns observed in drowning.
  • To evaluate the utility of CT numbers in differentiating these patterns.

Main Methods:

  • Retrospective analysis of high-resolution, multi-planar reconstruction chest CT images from 92 adult drowning cases.
  • Calculation of average lung CT numbers from 3D reconstructed whole-lung images.
  • Statistical assessment of differences in CT numbers between identified imaging patterns (alpha = 0.05).

Main Results:

  • Six postmortem chest CT patterns were identified in drowning cases.
  • The most frequent patterns were ground-glass opacities with thickened pulmonary interstitium (31 cases) and centrilobular nodules along airways (38 cases).
  • Significant differences in CT numbers were observed between the classified types, supporting their distinctness.

Conclusions:

  • Postmortem chest CT imaging patterns in drowning cases can be classified into major types.
  • This classification aids in the interpretation of imaging findings in forensic investigations of drowning.
  • CT features provide valuable, classifiable data for postmortem examination of drowning victims.