Amniotic fluid volume: Rapid MR-based assessment at 28-32 weeks gestation

European Radiology
N J HilliardD J Lomas

Abstract

This work evaluates rapid magnetic resonance projection hydrography (PH) based amniotic fluid volume (AFV) estimates against established routine ultrasound single deepest vertical pocket (SDVP) and amniotic fluid index (AFI) measurements, in utero at 28-32 weeks gestation. Manual multi-section planimetry (MSP) based measurement of AFV is used as a proxy reference standard. Thirty-five women with a healthy singleton pregnancy (20-41 years) attending routine antenatal ultrasound were recruited. SDVP and AFI were measured using ultrasound, with same day MRI assessing AFV with PH and MSP. The relationships between the respective techniques were assessed using linear regression analysis and Bland-Altman method comparison statistics. When comparing estimated AFV, a highly significant relationship was observed between PH and the reference standard MSP (R(2) = 0.802, p < 0.001). For the US measurements, SDVP measurement related most closely to amniotic fluid volume, (R(2) = 0.470, p < 0.001), with AFI demonstrating a weaker relationship (R(2) = 0.208, p = 0.007). This study shows that rapid MRI based PH measurement is a better predictor of AFV, relating more closely to our proxy standard than established US techniques. Although larger ...Continue Reading

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Citations

Feb 14, 2013·Diagnostic and Interventional Imaging·N KouaméA K Kéita
Aug 30, 2005·International Journal of Gynaecology and Obstetrics : the Official Organ of the International Federation of Gynaecology and Obstetrics·N D Hinh, J L Ladinsky
Dec 19, 2017·Journal of Magnetic Resonance Imaging : JMRI·Si-Xiu ZhaoHong-Li Ma
Nov 14, 2018·AJR. American Journal of Roentgenology·Timothy W NgDiane M Twickler
Jun 27, 2019·AJR. American Journal of Roentgenology·Ryne A DidierTeresa Victoria

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