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Abstract #1460

The effect of fetal dielectric properties, position and blood-flow in maternal tissues on fetal temperature for fetal MRI at 3T

Shaihan J Malik1, Jeffrey W Hand1, and Joseph V Hajnal1

1School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom

Effects of age adjusted dielectric properties for fetal tissues compared to adult values, fetal position, and blood-flow in maternal tissues on fetal temperature in a model of a 7 month pregnant woman within a 3T birdcage coil were investigated numerically. Age adjusted properties resulted in small increases in peak and mean fetal temperatures and reduced time to reach a peak fetal temperature of 39°C. Changes in fetal position produced a greater effect on peak and mean fetal temperatures. Temperature dependent blood-flow in maternal superficial tissues had little effect on fetal temperature.

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