What question did this study set out to answer?

To establish MRI-based normative charts for amniotic fluid volume and its ratio with fetal body volume during gestation.

April 10, 2026Open Access

Normative range for MRI amniotic fluid volume from 16 to 36 gestational weeks: Absolute and relative values, and correlation to ultrasound

Key Points

To establish MRI-based normative charts for amniotic fluid volume and its ratio with fetal body volume during gestation.
Developed normative charts for amniotic fluid volume (AFV) and AFV/fetal body volume (FBV) ratio.
Analyzed data from 16 to 36 weeks of gestation.
Compared MRI findings with ultrasound measurements.
Established first normative MRI charts for AFV and AFV/FBV ratio.
Provided reference ranges that may aid in clinical decision-making.
Showed a correlation between MRI and ultrasound measurements of amniotic fluid.

Abstract

This study provides the first MRI-based normative charts for AFV and AFV/FBV ratio between 16 and 36 weeks' gestation. The AFV/FBV ratio represents a novel physiological marker integrating fetal growth and fluid balance. These reference ranges may support future research and clinical decision-making.

Normative range for MRI amniotic fluid volume from 16 to 36 gestational weeks: Absolute and relative values, and correlation to ultrasound

Key Points

Abstract

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