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Related Concept Videos

Computed Tomography01:10

Computed Tomography

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Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
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Imaging Studies III: Computed Tomography01:27

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DefinitionComputed Tomography (CT) of the genitourinary (GU) tract is a non-invasive imaging modality that utilizes X-rays and computer processing to generate detailed cross-sectional images of the urinary system, encompassing the kidneys, ureters, bladder, and adjacent structures such as the adrenal glands.PurposeCT scans of the GU tract serve several diagnostic and therapeutic purposes, including:Diagnosis of Urinary Tract Diseases: Detects kidney stones, tumors, cysts, and congenital...
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Estimating the age at death for forensic cases using quantitative computed tomography.

Hiroki Kondou1, Risa Bandou1, Hiroaki Ichioka1

  • 1Department of Forensic Medicine, Graduate School of Medicine, Kyoto Prefectural University of Medicine, 465 Kajiicho, Kawaramachi-dori Hirokoji-agaru, Kamigyo-ku, Kyoto, 602-8566, Japan.

Forensic Science International
|June 23, 2022
PubMed
Summary

Forensic scientists can estimate age at death using a modified quantitative computed tomography (qCT) method. This technique measures bone mineral density, even in putrefied remains, aiding in age estimation.

Keywords:
Age estimationPostmortem computed tomographyQuantitative computed tomography

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Area of Science:

  • Forensic Anthropology
  • Radiology
  • Osteology

Background:

  • Age estimation is crucial in forensic science.
  • Bone mineral density (BMD) correlates with age.
  • Quantitative computed tomography (qCT) measures BMD but is unsuitable for putrefied remains.

Purpose of the Study:

  • To investigate a modified qCT method for age estimation.
  • To assess the feasibility of using BMD from specific bone regions in putrefied cadavers.

Main Methods:

  • A modified qCT approach was developed to calculate BMD from bone regions with specific Hounsfield unit ranges (50-350 HU).
  • 171 male and 106 female cadavers, including putrefied specimens, were analyzed.
  • Univariate linear regression and 10-fold cross-validation were employed.

Main Results:

  • Significant correlations between BMD and age at death were found for both males (slope -0.20) and females (slope -0.23).
  • Cross-validation yielded coefficients of determination of 0.33 for males and 0.42 for females.
  • The modified qCT method demonstrated potential for age estimation in putrefied cases.

Conclusions:

  • The modified qCT method offers a viable approach for estimating age at death.
  • This technique is applicable even when remains are in a state of putrefaction.
  • Further research may refine this method for forensic applications.