Abstract
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/mL x fetal 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% Cl) 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.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1017-1020 |
| Number of pages | 4 |
| Journal | American journal of obstetrics and gynecology |
| Volume | 189 |
| Issue number | 4 |
| DOIs | |
| State | Published - Oct 2003 |
Keywords
- Birth weight
- Fetus
- Magnetic resonance imaging
- Ultrasound
ASJC Scopus subject areas
- Obstetrics and Gynecology