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Lancet. 1994 Mar 12;343(8898):644-5.

Fetal weight estimation by echo-planar magnetic resonance imaging.

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  • 1Department of Obstetrics and Gynaecology, City Hospital, Nottingham, UK.


Fetal weight was estimated in utero in eleven singleton pregnancies by measurement of fetal volume with echo-planar imaging (EPI), a form of magnetic resonance imaging, and by ultrasound measurements. EPI estimates of fetal volume were closely correlated with actual birthweight (R = 0.97). The median difference (expressed as a percentage of actual birthweight) between actual and EPI-estimated birthweights was 3.0% (range 0.6-9.9); this discrepancy was significantly smaller than that found for ultrasonographic estimates (6.5% [1.7-17.8]; p < 0.01).

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