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Unilateral Lung Volume Analysis Using Micro-CT for Enhanced Assessment of Pulmonary Fibrosis in Preclinical Models
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Estimating normal lung weight measurement using postmortem CT in forensic cases.

Kotaro Matoba1, Hideki Hyodoh2, Manabu Murakami3

  • 1Dep. Forensic Medicine, Graduate School of Medicine, Hokkaido University, Japan.

Legal Medicine (Tokyo, Japan)
|November 10, 2017
PubMed
Summary
This summary is machine-generated.

Postmortem CT can accurately estimate lung weight in autopsy cases. This method provides a reliable way to determine lung weight, crucial for forensic and medical evaluations.

Keywords:
AutopsyLungsPostmortem CTVolumetryWeight

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Area of Science:

  • Forensic Pathology
  • Radiology
  • Anatomical Pathology

Background:

  • Accurate lung weight estimation is vital in forensic and clinical settings.
  • Traditional methods can be time-consuming and subject to variability.
  • Postmortem imaging offers a non-invasive alternative for assessing organ characteristics.

Purpose of the Study:

  • To evaluate the efficacy of postmortem computed tomography (CT) in estimating lung weight.
  • To determine the correlation between lung weight and various anthropometric parameters.
  • To establish a reliable CT-based method for lung weight determination in autopsy cases.

Main Methods:

  • Utilized postmortem CT scans from 31 cadavers (20-98 years old) with varying postmortem intervals.
  • Compared CT-derived lung volumes and densities with actual lung weights obtained during autopsy.
  • Analyzed correlations between lung weight and body height, weight, whole body surface area (WBSA), and body mass index (BMI).

Main Results:

  • Mean lung weights were 284.9g (right) and 249.3g (left).
  • Simple linear regression showed no significant correlation between lung weight and individual anthropometric factors.
  • Stepwise regression analysis yielded a high correlation coefficient (R² = 0.840), indicating strong predictive power for lung weight estimation using CT.

Conclusions:

  • Postmortem CT is a highly effective tool for estimating lung weight in well-aerated autopsy cases.
  • The study established a robust CT-based model for lung weight determination.
  • This imaging technique offers a valuable, non-invasive approach for quantitative lung assessment in postmortem examinations.