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Updated: Apr 8, 2026

Three-dimensional Rendering and Analysis of Immunolabeled, Clarified Human Placental Villous Vascular Networks

Three-dimensional Rendering and Analysis of Immunolabeled, Clarified Human Placental Villous Vascular Networks

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Shape matching algorithm to validate the tracing protocol of placental chorionic surface vessel networks.

R G Shah¹, C M Salafia², T Girardi¹

¹Placental Analytics, LLC, Larchmont, NY, USA.

|June 24, 2015

Summary

Researchers developed a method to trace placental chorionic surface vessel networks (PCSVNs) from 2D images. This technique accurately captures PCSVN structure, aiding in the assessment of fetal health and wellbeing.

Keywords:

Placenta Placental chorionic surface vessel network (PCSVN)Shape context Shape matching

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Area of Science:

Obstetrics and Gynecology
Developmental Biology
Medical Imaging

Background:

Placental chorionic surface vessel networks (PCSVNs) exhibit variability potentially linked to fetal development and health.
Understanding PCSVN structure is crucial for assessing fetal wellbeing.

Purpose of the Study:

To establish and validate a protocol for manually tracing PCSVNs from digital 2D images of placentas.
To assess the comparability of tracings from unmanipulated PCSVNs versus paint-injected PCSVNs.

Main Methods:

Manual tracing of PCSVNs from digital 2D images of post-delivery placentas.
Validation using a shape matching method to compare tracings of paint-injected and unmanipulated (uninjected and deflated) vessels.
Analysis of network similarity between the two tracing methods.

Main Results:

Manual tracings of unmanipulated PCSVNs yield networks highly comparable to those obtained from paint-injected PCSVNs.
The developed protocol demonstrates reliability in capturing PCSVN structure.

Conclusions:

Manual tracing of unmanipulated PCSVNs is a valid method for analyzing placental vasculature.
This technique can extract key features of PCSVN growth and structure relevant to fetal wellbeing.