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Postmortem computed tomographic (PMCT) findings of pericardial effusion due to acute aortic dissection

Seiji Shiotani1, Ko Watanabe, Mototsugu Kohno

  • 1Departments of Radiology, Tsukuba Medical Center Hospital, Ibaraki, Japan.

Radiation Medicine
|January 15, 2005
PubMed
Abstract

Insights

Postmortem CT scans revealed a "hyperdense armored heart" pattern in 60% of deceased acute aortic dissection patients with pericardial effusion. This finding aids in diagnosing this condition posthumously.

Area of Science:

  • Forensic Radiology
  • Cardiovascular Pathology

Background:

  • Acute aortic dissection is a life-threatening condition.
  • Pericardial effusion is a common complication.
  • Postmortem imaging is crucial for determining cause of death.

Purpose of the Study:

  • To characterize the postmortem computed tomography (PMCT) appearance of pericardial effusion in acute aortic dissection.
  • To identify specific PMCT findings associated with this condition.

Main Methods:

  • PMCT was performed on 30 deceased patients with confirmed pericardial effusion due to aortic dissection.
  • Examinations were conducted within 2 hours of death.
  • Image analysis focused on the characteristics of pericardial fluid.

Main Results:

  • The "hyperdense armored heart" sign, characterized by double concentric rings of differing densities, was observed in 60% of cases.
  • A high-density fluid level (hypostasis) was seen in 7%.
  • No stratification was present in 33% of cases.

Conclusions:

  • The "hyperdense armored heart" is a frequent and distinctive PMCT finding in fatal acute aortic dissection with pericardial effusion.
  • PMCT can effectively visualize pericardial effusion characteristics in deceased individuals.
  • This imaging pattern aids in postmortem diagnosis.

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