PhD student Kristie Huda presented her work at SPIE Photonics West 2020.

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PhD student Kristie Huda presented her work at SPIE Photonics West 2020 in San Francisco. Check out the proceedings for more details about her work.

Kristie Huda, Carolyn L. Bayer, “Monte Carlo simulation for improving spectral photoacoustic imaging-based oxygen saturation estimation of human placental tissue,” Proc. SPIE 11240, Photons Plus Ultrasound: Imaging and Sensing 2020, 112400D (17 February 2020); https://doi.org/10.1117/12.2545155

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Imaging Angiogenesis and Placental Function

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Preeclampsia, a hypertensive disorder, is estimated to affect 5% to 10% of pregnancies. An initiating factor in the development of the disease is placental hypoxia. Using photoacoustic imaging, we have successfully monitored longitudinal, in vivo placental oxygenation in normal pregnancy and the reduced uterine perfusion pressure (RUPP) model of preeclampsia. Our current aim is to investigate the effect two potential therapies for preeclampsia have on placental hypoxia and maternal/fetal outcome.

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Imaging Transport Across the Maternal-Fetal Barrier

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When combined with contrast agents, photoacoustic imaging can be used to investigate the transport of key molecules across the placental barrier. For example, placental transport of folate, a critical nutrient for development, may be altered in the presence of specific medications. How the presence of specific medications changes the folate available to the fetus is being studied with our imaging techniques. This work is funded by a Research Competitiveness Subprogram grant from the Louisiana Board of Regents.

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Clinical Translation of Photoacoustic Imaging

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Photoacoustic imaging opens a new path to assess medical conditions where in vivo measurements are critical. Our aim is to study light delivery systems, the interaction of light with human placental tissue, and improve the depth resolution of photoacoustic imaging. Successful detection of placental hypoxia will allow us to noninvasively monitor the effect of placental ischemia during human pregnancy. The goal of this project is to develop methods to use photoacoustic imaging to monitor placental oxygenation in a clinical setting.

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