OBJECTIVE: This study was undertaken to compare magnetic resonance (MR) and ultrasound (US) fetal weight estimates obtained immediately before delivery with birth weight. STUDY DESIGN: Eighty women scheduled for a cesarean delivery underwent a fast acquisition MR and US for fetal weight estimation within 3 hours of delivery. Prospective MR calculation was based on the equation 0.12+1.031 g/mLxfetal volume (mL)=MR weight (g). US fetal weight estimation was calculated by the formula by Hadlock et al. Estimations were compared with birth weight. RESULTS: Correlation (95% CI) between birth weight and MR weight is 0.95 with a mean absolute error of 129 g (105-155) compared with the correlation between birth weight and US of 0.85 with a mean absolute error of 225 g (186-264). The correlation for birth weight and MR imaging is significantly greater than that of birth weight and US, P<.001. CONCLUSION: Birth weight estimation is more accurate by MR imaging than by US in term infants.
OBJECTIVE: This study was undertaken to compare magnetic resonance (MR) and ultrasound (US) fetal weight estimates obtained immediately before delivery with birth weight. STUDY DESIGN: Eighty women scheduled for a cesarean delivery underwent a fast acquisition MR and US for fetal weight estimation within 3 hours of delivery. Prospective MR calculation was based on the equation 0.12+1.031 g/mLxfetal volume (mL)=MR weight (g). US fetal weight estimation was calculated by the formula by Hadlock et al. Estimations were compared with birth weight. RESULTS: Correlation (95% CI) between birth weight and MR weight is 0.95 with a mean absolute error of 129 g (105-155) compared with the correlation between birth weight and US of 0.85 with a mean absolute error of 225 g (186-264). The correlation for birth weight and MR imaging is significantly greater than that of birth weight and US, P<.001. CONCLUSION: Birth weight estimation is more accurate by MR imaging than by US in term infants.
Authors: N J Hilliard; R Hawkes; A J Patterson; M J Graves; A N Priest; S Hunter; C Lees; P A Set; D J Lomas Journal: Eur Radiol Date: 2016-01-20 Impact factor: 5.315
Authors: Jacqueline Matthew; Christina Malamateniou; Caroline L Knight; Kelly P Baruteau; Tara Fletcher; Alice Davidson; Laura McCabe; Dharmintra Pasupathy; Mary Rutherford Journal: Ultrasound Date: 2018-01-29
Authors: Mike Seed; Joshua F P van Amerom; Shi-Joon Yoo; Bahiyah Al Nafisi; Lars Grosse-Wortmann; Edgar Jaeggi; Michael S Jansz; Christopher K Macgowan Journal: J Cardiovasc Magn Reson Date: 2012-11-26 Impact factor: 5.364