Determining the optical properties of blood using He-Ne laser and double integrating sphere set-up

• Autorzy: Ashoor Habib E. , Jasim Khalil Ebrahim

Identyfikatory

DOI

10.2478/pjmpe-2019-0001

• Języki publikacji: EN

Abstrakty

EN

The behaviour of light interaction with biological tissue is determined by micro-optical parameters: refractive index (n), absorption coefficient (µ_a), scattering coefficient (µ_s), and anisotropy (g). The goal of this study is to measure the optical properties of normal whole blood using He-Ne laser (wavelength 632.8 nm). The refractive index is measured using the traveller microscope. The integrating sphere method is used to measure the macro-optical parameters: total diffusive reflectance, transmittance, and collimated transmittance at wavelength 632.8 nm. The macro-optical parameters are fed to Inverse Adding Doubling (IAD) theoretical technique, to estimate the micro-optical parameters (µ_s, µ_a, g). An alternative practical method is used to measure the g value based on utilising the goniometric table. The study reveals that the refractive index (n) equals 1.395±0.0547, absorption coefficient (µ_a) equals 2.37 mm−1, scattering coefficient (µ_s) equals 55.69 mm−1, and anisotropy (g) equals 0.82. In conclusion, these findings approved, in general, the applicability of the suggested experimental set up. The set up depend on using three devices: the integrating sphere method to estimate (µ_s, µ_a, g), traveller microscope (n) and goniometer (g).

Słowa kluczowe

EN

micro-linear optical properties; whole blood; He-Ne laser; integrating sphere; inverse adding doubling

• Wydawca: Polskie Towarzystwo Fizyki Medycznej ; De Gruyter
• Czasopismo: Polish Journal of Medical Physics and Engineering
• Rocznik: 2019
• Tom: Vol. 25, Iss. 1
• Strony: 1--5
• Opis fizyczny: Bibliogr. 24 poz., rys., tab.

Twórcy

autor

Ashoor Habib E.

• University of Bahrain, Colleges of Science, Department of Physics, Sakheer, P.O.Box:3203, Kingdom of Bahrain

autor

Jasim Khalil Ebrahim

• University of Bahrain, Colleges of Science, Department of Physics, Sakheer, P.O.Box:3203, Kingdom of Bahrain

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).