Death time estimation in case work. I. The rectal temperature time of death nomogram

Area of Science:

• Forensic Science
• Thanatology
• Biophysics

Background:

• Estimating time of death is crucial in forensic investigations.
• Existing methods for postmortem cooling estimation have limitations.
• Accurate postmortem interval determination relies on reliable temperature-based methods.

Purpose of the Study:

• To develop and validate a nomogram for estimating time of death based on rectal temperature.
• To provide a practical tool for forensic practitioners at crime scenes.
• To assess the accuracy and limitations of the Nomogram Method.

Main Methods:

• Development of the Nomogram Method based on physical principles and existing literature.
• Incorporation of the two-exponential cooling model by Marshall and Hoare.
• Validation through experimental body cooling studies and literature review.

Main Results:

• The Nomogram Method utilizes a single rectal temperature measurement for immediate time of death estimation.
• The method eliminates the need for complex calculations at the crime scene.
• Data supporting the accuracy and practical application of the method are provided.

Conclusions:

• The Nomogram Method offers a rapid and practical approach to estimating time since death.
• The study discusses the method's limitations and compares it with other temperature-based techniques.
• This nomogram serves as a valuable tool for forensic investigations.