Combined CW and FMCW near infrared spectroscopy for transabdominal fetal oximetry
Combined CW and FMCW near infrared spectroscopy for transabdominal fetal oximetry
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组合 CW 和 FMCW 近红外光谱用于经腹胎儿血氧测定
DOI：
10.1117/12.2578810
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发表时间：
2021
期刊：
影响因子：
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通讯作者：
Shing-Jiuan Liu, Soheil Ghiasi
中科院分区：
文献类型：
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作者：
Shing-Jiuan Liu, Soheil Ghiasi
我们提出了一种基于时域干涉近红外光谱的经腹无创测量胎儿血氧饱和度的新方法。我们使用调频连续波技术测量了近红外光照射在产妇腹部的时间分辨反射率。利用扩散方程将母体腹部建模为两层介质(即母体组织和胎儿组织)，从而推导出母体组织和胎儿组织的光学性质。使用两个光学波长，可以测量母亲和胎儿的血氧饱和度。这项技术可以在产房分娩期间提供重要的产中胎儿健康评估。
We propose a new non-invasive approach to transabdominally measure fetal oxygen saturation based on time-domain interferometric near-infrared spectroscopy. We use the frequency-modulated continuous-wave technique to measure the time resolved reflectance of near-infrared light shining on the maternal abdomen. By modeling the maternal abdomen as two-layered media (i.e. maternal and fetal tissue) through diffusion equations, the optical properties of both the maternal and fetal tissue can be deduced. Using two optical wavelengths, oxygen saturation can be measured for both the mother and fetus. This technique could provide an important assessment of intrapartum fetal health during labor in the delivery room.