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Classification of hemopericardium on postmortem CT.

Satoshi Watanabe1, Hideki Hyodoh1, Jyunya Shimizu1

  • 1Department of Legal Medicine, Sapporo Medical University, S1 W17 Chuo-ku, Sapporo 060-8556, Japan.

Legal Medicine (Tokyo, Japan)
|June 11, 2015
PubMed
Summary
This summary is machine-generated.

Postmortem CT (PMCT) identifies specific hemopericardium patterns, like double and single bands, indicative of cardiac tamponade. This aids forensic radiologists in accurate interpretation and avoids misdiagnosis.

Keywords:
Cardiac tamponadeCardiopulmonary resuscitationForensic radiologyPericardiumPostmortem CT

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Area of Science:

  • Forensic Radiology
  • Medical Imaging
  • Pathology

Background:

  • Postmortem CT (PMCT) is increasingly utilized in forensic investigations.
  • Accurate interpretation of hemopericardium on PMCT is crucial for determining cause of death.
  • Understanding PMCT findings related to cardiac tamponade is essential for forensic practice.

Purpose of the Study:

  • To evaluate pericardial and pleural fluid volumetry using PMCT.
  • To identify and classify PMCT signs of cardiac tamponade.
  • To compare PMCT findings with autopsy results for validation.

Main Methods:

  • Fourteen cadavers were examined using PMCT.
  • Pericardial and pleural fluid volumes were measured and compared between PMCT and autopsy.
  • Pericardial lesion appearances on PMCT were documented and correlated with autopsy findings.

Main Results:

  • Pericardial space volume was significantly greater on PMCT compared to autopsy (p<0.05).
  • No significant difference was found in pleural space fluid volumes between PMCT and autopsy.
  • Three hemopericardium patterns were observed on PMCT: double band, single band, and horizontal level.

Conclusions:

  • Double and single band patterns on PMCT are indicative of cardiac tamponade.
  • Certain patterns may be associated with CPR or postmortem manipulation.
  • Knowledge of pericardial PMCT appearance aids in correct radiological interpretation and avoids misreading.