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Published on: June 9, 2023
Gestational sac fluid volume measurements in virtual reality
M Rousian1, A H J Koning, W C Hop
1Department of Obstetrics and Gynaecology, Division of Obstetrics and Prenatal Medicine, Erasmus MC, Rotterdam, The Netherlands. m.rousian@erasmusmc.nl
Summary
Virtual reality (VR) enables accurate gestational sac fluid volume (GSFV) measurement in early pregnancy. New VR-derived growth charts show promise for monitoring embryonic development.
Area of Science:
- Medical Imaging
- Obstetrics and Gynecology
- Virtual Reality Applications
Background:
- Accurate measurement of gestational sac fluid volume (GSFV) is crucial for assessing early pregnancy development.
- Traditional methods for volume estimation may have limitations in precision and visualization.
- Virtual reality (VR) offers immersive visualization and interaction capabilities for medical imaging.
Purpose of the Study:
- To evaluate a virtual reality (VR) application for measuring gestational sac fluid volume (GSFV) in first-trimester pregnancies.
- To investigate the correlation between GSFV and established embryonic growth parameters.
- To develop new growth charts for GSFV using VR technology.
Main Methods:
- A prospective cohort study involving 180 3D ultrasound scans from 42 healthy women (5 + 5 to 12 + 6 weeks' gestational age).
- 3D ultrasound datasets were processed using the I-Space immersive VR system and V-Scope application for 3D rendering and interaction.
- Semi-automated segmentation algorithms were used for GSFV measurement; comparison with ellipsoid formula calculations and existing embryonic growth data (volume, crown-rump length).
Main Results:
- A positive correlation was observed between GSFV and gestational age (GA), crown-rump length (CRL), and gestational sac diameter (GSD).
- The study identified discrepancies between VR-derived GSD formulas and commonly used clinical formulas, particularly around 8 + 5 weeks' GA.
- Gestational sac volume (GSV) measured in VR was, on average, 19.8% smaller than that calculated using the ellipsoid formula.
Conclusions:
- New gestational sac fluid volume (GSFV) charts for the first trimester were successfully constructed using virtual reality.
- These VR-derived growth charts represent a potentially valuable tool for the assessment of normal and abnormal embryonic development.
- The study highlights the potential of VR in enhancing the accuracy and utility of early pregnancy ultrasound measurements.
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