We demonstrate that with the high signal to noise and sensitivity to oxygenation at 15.2 T we can visualize the transport of oxygen across the murine placenta with temporal resolution of 20s. Changes in the R2* of the placenta and embryo heart, observed upon switching from 100% O2 to 10% and switching back to 100% O2, exhibit different dynamic behavior than the maternal blood vessels, specifically a delayed response compared to the maternal blood vessels and a much slower response when switching from 10% O2 to 100% O2.
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