Monitoring of the vessel capillary density spatial pattern in epithelium phantom model

Monitoring of the vessel capillary density and blood oxygenation spatial pattern in epithelium is important for shock detection and it's preventing interventions. The challenge is the complex epithelium structure, absorption and scattering of light in the multiple tissue layers. In this paper we describe results of estimating the vessel capillary density pattern in tissue phantoms collecting spatially resolved reflectance spectra. We designed tissue phantom which mimics optical properties of epithelium including microvasculature. Grids grooved in the phantom plates mimicking the blood capillary network containing freshly prepared oxy-hemoglobin solution. The preliminary results shows that the new method can reasonably extracts minor spatial deviations of oxygenation and local volume blood fraction - parameters, directly related to the local vessel density patterns.