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Lashkari et al., 2015 - Google Patents

Frequency-domain photoacoustic phase spectroscopy: a fluence-independent approach for quantitative probing of hemoglobin oxygen saturation

Lashkari et al., 2015

Document ID
15552109116183659686
Author
Lashkari B
Dovlo E
Dhody S
Mandelis A
et al.
Publication year
Publication venue
IEEE Journal of Selected Topics in Quantum Electronics

External Links

Snippet

In this paper, it is shown that the phase of the frequency-domain photoacoustic (PA) signal can be used to measure the absorption coefficient (μ α) of the chromophore. This method can be referred to as a calibration-free approach in the sense that it is not affected by the …
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    • A61B5/1455—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue using optical sensors, e.g. spectral photometrical oximeters
    • A61B5/14551—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue using optical sensors, e.g. spectral photometrical oximeters for measuring blood gases
    • A61B5/14553—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue using optical sensors, e.g. spectral photometrical oximeters for measuring blood gases specially adapted for cerebral tissue
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    • A61B5/0093—Detecting, measuring or recording by applying one single type of energy and measuring its conversion into another type of energy
    • A61B5/0095—Detecting, measuring or recording by applying one single type of energy and measuring its conversion into another type of energy by applying light and detecting acoustic waves, i.e. photoacoustic measurements
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