3D Head Shape Feature Analysis of Zika-Infected Children.

Area of Science:

• Medical Imaging
• Pediatrics
• Virology

Background:

• Congenital Zika syndrome (CZS) is a group of birth defects caused by Zika Virus (ZKV) infection during pregnancy.
• ZKV infection can lead to fetal microcephaly, characterized by reduced brain volume and growth.
• Current preliminary screening relies on head circumference measurements, which may lack sensitivity.

Purpose of the Study:

• To identify novel diagnostic characteristics of CZS using 3D head imaging.
• To compare the diagnostic accuracy of specific 3D facial indices with traditional measurements.

Main Methods:

• Analysis of 3D head images from 35 ZKV-positive cases and 35 controls.
• Comparison of facial anthropometric measurements, including centroid size, head circumference (HC), head height (HH), and chin height (CH).
• Evaluation of ratios such as chin height/total facial height (CH/TFH) and head height/head circumference (HH/HC).

Main Results:

• Significant differences were observed in centroid size, HC, HH, and CH between CZS and control groups.
• The HH/HC ratio demonstrated significant differences between the groups.
• An HH/HC ratio of 0.49 achieved 86% sensitivity and 74% specificity for CZS diagnosis.

Conclusions:

• The HH/HC ratio is a more sensitive diagnostic marker for CZS than HC alone.
• This 3D imaging-derived index shows potential as a gold standard for early CZS screening.