Multispectral snapshot imaging of skin microcirculatory hemoglobin oxygen saturation using artificial neural networks trained on in vivo data
| Autor: | Maria Ewerlöf, Tomas Strömberg, Marcus Larsson, E. Göran Salerud |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
skin microcirculation
multispectral imaging artificial neural networks hemoglobin oxygen saturation diffuse reflectance spectroscopy Microcirculation Medical Laboratory and Measurements Technologies Biomedical Engineering Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Biomaterials Hemoglobins Oxygen Saturation Neural Networks Computer Medicinsk laboratorie- och mätteknik Skin |
| Popis: | Significance: Developing algorithms for estimating blood oxygenation from snapshot multi-spectral imaging (MSI) data is challenging due to the complexity of sensor characteristics and photon transport modeling in tissue. We circumvent this using a method where artificial neural networks (ANNs) are trained on in vivo MSI data with target values from a point-measuring reference method. Aim: To develop and evaluate a methodology where a snapshot filter mosaic camera is utilized for imaging skin hemoglobin oxygen saturation (S-O2), using ANNs. Approach: MSI data were acquired during occlusion provocations. ANNs were trained to estimate S-O2 with MSI data as input, targeting data from a validated probe-based reference system. Performance of ANNs with different properties and training data sets was compared. Results: The method enables spatially resolved estimation of skin tissue S-O2. Results are comparable to those acquired using a Monte-Carlo-based approach when relevant training data are used. Conclusions: Training an ANN on in vivo MSI data covering a wide range of target values acquired during an occlusion protocol enable real-time estimation of S-O2 maps. Data from the probe-based reference system can be used as target despite differences in sampling depth and measurement position. (C) The Authors. Published by SPIE under a Creative Commons Attribution 4.0 International License. Funding Agencies|VINNOVA Grants via the Swelife and MedTech4Health programsVinnova [2016-02211, 2017-01435, 2019-01522] |
| Databáze: | OpenAIRE |
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