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Abstract #1548

Comparison of uterine artery pulsatility and resistivity indices using magnetic resonance imaging and Doppler ultrasound

Rebecca Hawkes 1 , Andrew Patterson 2 , Andrew Priest 2 , Martin J Graves 2 , Nicholas Hilliard 2 , Patricia Set 1 , and David Lomas 1

1 Radiology, Addenbrooke's Hospital, Cambridge, Cambridgeshire, United Kingdom, 2 Radiology, Addenbrooke's Hospital, Cambridge, Cambridge, United Kingdom

There is limited research regarding placental blood flow using MRI. The aim of this study was to evaluate whether uterine arteries could be identified on MRI, if a RI and PI could be measured and whether these were comparable with Doppler ultrasound. Using magnitude and phase MR images, likely uterine arteries were identified. Results demonstrated that uterine arteries can be identified on MR with a relatively small bias but with only moderate correlation for the PI/RI. MR phase contrast techniques allow for absolute flow quantification and the possibility of obtaining total uterine blood flow using this approach.

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