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Heat and Mass Transfer

, Volume 54, Issue 9, pp 2815–2826 | Cite as

Uncertainty in temperature-based determination of time of death

  • Martin Weiser
  • Bodo Erdmann
  • Sebastian Schenkl
  • Holger Muggenthaler
  • Michael Hubig
  • Gita Mall
  • Stefan Zachow
Original
  • 169 Downloads

Abstract

Temperature-based estimation of time of death (ToD) can be performed either with the help of simple phenomenological models of corpse cooling or with detailed mechanistic (thermodynamic) heat transfer models. The latter are much more complex, but allow a higher accuracy of ToD estimation as in principle all relevant cooling mechanisms can be taken into account. The potentially higher accuracy depends on the accuracy of tissue and environmental parameters as well as on the geometric resolution. We investigate the impact of parameter variations and geometry representation on the estimated ToD. For this, numerical simulation of analytic heat transport models is performed on a highly detailed 3D corpse model, that has been segmented and geometrically reconstructed from a computed tomography (CT) data set, differentiating various organs and tissue types. From that and prior information available on thermal parameters and their variability, we identify the most crucial parameters to measure or estimate, and obtain an a priori uncertainty quantification for the ToD.

Notes

Acknowledgments

We thank our colleague Marian Moldenhauer for careful reading of the article and for helpful comments. Funding by the University of Jena is gratefully acknowledged.

Compliance with Ethical Standards

Conflict of interests

The authors declare that they have no conflict of interest.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Zuse Institute BerlinBerlinGermany
  2. 2.Institute of Forensic MedicineJena University Hospital – Friedrich Schiller UniversityJenaGermany

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