R1 changes in the human placenta at 3 T in response to a maternal oxygen challenge protocol

Placenta. 2016 Mar:39:151-3. doi: 10.1016/j.placenta.2016.01.016. Epub 2016 Jan 21.

Abstract

Oxygen-enhanced MRI non-invasively monitors placental oxygenation in-vivo. This technique has been demonstrated at 1.5 Tesla (T) in healthy pregnancies. The aim of this study was to investigate whether findings are comparable at 3T. Nine pregnant volunteers underwent MRI at 3T. Scans obtained R1 (1/T1) measures from T1 maps under air, followed by a dynamic series breathing 100% oxygen. A statistically significant negative correlation was found between dR1 and gestation (P = 0.0008, r = -0.90, Pearson correlation test). The effect of the field strength was not significant within regression analysis. Placental Oxygen-Enhanced MRI at 3T gives comparable results to those previously obtained at 1.5T.

Keywords: MRI; Oxygen-enhanced; Placenta.

Publication types

  • Evaluation Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Female
  • Humans
  • Imaging, Three-Dimensional
  • Magnetic Resonance Imaging / methods*
  • Oxygen / metabolism*
  • Oxygen Consumption*
  • Placenta / drug effects
  • Placenta / metabolism*
  • Pregnancy
  • Young Adult

Substances

  • Oxygen