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• W2073196665 endingPage "e82977" @default.
• W2073196665 startingPage "e82977" @default.
• W2073196665 abstract "A rapid heuristic ratiometric analysis for estimating tissue hemoglobin concentration and oxygen saturation from measured tissue diffuse reflectance spectra is presented. The analysis was validated in tissue-mimicking phantoms and applied to clinical measurements in head and neck, cervical and breast tissues. The analysis works in two steps. First, a linear equation that translates the ratio of the diffuse reflectance at 584 nm and 545 nm to estimate the tissue hemoglobin concentration using a Monte Carlo-based lookup table was developed. This equation is independent of tissue scattering and oxygen saturation. Second, the oxygen saturation was estimated using non-linear logistic equations that translate the ratio of the diffuse reflectance spectra at 539 nm to 545 nm into the tissue oxygen saturation. Correlations coefficients of 0.89 (0.86), 0.77 (0.71) and 0.69 (0.43) were obtained for the tissue hemoglobin concentration (oxygen saturation) values extracted using the full spectral Monte Carlo and the ratiometric analysis, for clinical measurements in head and neck, breast and cervical tissues, respectively. The ratiometric analysis was more than 4000 times faster than the inverse Monte Carlo analysis for estimating tissue hemoglobin concentration and oxygen saturation in simulated phantom experiments. In addition, the discriminatory power of the two analyses was similar. These results show the potential of such empirical tools to rapidly estimate tissue hemoglobin in real-time spectral imaging applications." @default.
• W2073196665 created "2016-06-24" @default.
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• W2073196665 date "2013-12-16" @default.
• W2073196665 modified "2023-09-25" @default.
• W2073196665 title "Rapid Determination of Oxygen Saturation and Vascularity for Cancer Detection" @default.
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• W2073196665 doi "https://doi.org/10.1371/journal.pone.0082977" @default.
• W2073196665 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/3865147" @default.
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