Analysis of Frontal Sinuses for Personal Identification in a Chinese Sample Using a New Code Number

Area of Science:

• Forensic Anthropology
• Radiographic Analysis
• Biometrics

Background:

• Frontal sinus patterns are utilized in forensic anthropology for personal identification.
• Yoshino's system (codY) uses a numerical code based on frontal sinus classifications.
• Existing methods require enhancement for improved accuracy in identification.

Purpose of the Study:

• To develop and evaluate a novel eight-digit coding system (codC) for frontal sinus patterns.
• To incorporate continuous variables, specifically area ratios SOR1 and SOR2, into the coding system.
• To compare the identification efficacy of the new codC system against Yoshino's codY system.

Main Methods:

• Analysis of digital radiographic images from 150 Chinese individuals.
• Calculation of frontal sinus area to orbit area ratios (SOR1 and SOR2).
• Statistical analysis using Spearman's partial correlation coefficients and maximum-weight dependence trees.

Main Results:

• The new codC system demonstrated a significantly lower probability of generating identical personal codes compared to codY.
• The inclusion of continuous variables (SOR1, SOR2) enhanced the discriminatory power of the identification code.
• The developed codC system proved effective for personal identification.

Conclusions:

• The proposed codC system offers a more accurate and reliable method for personal identification using frontal sinus patterns.
• This approach advances forensic identification techniques by integrating quantitative measurements.
• The study validates the scientific approach for enhancing biometric identification through radiographic analysis.