Differences in optical properties of rat muscle tissue at room and physiological temperatures
Background and Objectives: Knowledge of the optical and thermal human tissues properties is essential for optimizing laser therapy and optical diagnostics. Most studies are carried out at room temperature of the sample. At the same time, it is known that the optical properties of biological tissues...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Saratov State University
2022-11-01
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| Series: | Известия Саратовского университета. Новая серия Серия: Физика |
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| Online Access: | https://fizika.sgu.ru/sites/fizika.sgu.ru/files/text-pdf/2022/11/fizika_2022_4-67-73.pdf |
| _version_ | 1828300520024965120 |
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| author | Gamayunova, Ekaterina Алексеевна Doronkina, Anna A. Lazareva, Ekaterina Nikolaevna Tuchina, Daria K. Kochubey, Vyacheslav Ivanovich Yanina, Irina Iur'evna |
| author_facet | Gamayunova, Ekaterina Алексеевна Doronkina, Anna A. Lazareva, Ekaterina Nikolaevna Tuchina, Daria K. Kochubey, Vyacheslav Ivanovich Yanina, Irina Iur'evna |
| author_sort | Gamayunova, Ekaterina Алексеевна |
| collection | DOAJ |
| description | Background and Objectives: Knowledge of the optical and thermal human tissues properties is essential for optimizing laser therapy and optical diagnostics. Most studies are carried out at room temperature of the sample. At the same time, it is known that the optical properties of biological tissues depend on temperature even in the physiological temperature range, that is, in the range of normal functioning of the body. Accordingly, there is a possibility that the use of literature data will lead to an incorrect assessment of the conditions for the propagation of light through biological tissue in a living object. Incorrect data on the optical properties of biological tissues at physiological temperature can lead to unreliable results in medical optical diagnostics or therapy. Therefore, studies of the temperature dependences of the optical properties of biological objects are undoubtedly topical. This work shows the differences in the optical properties of rat muscle tissue before and after heating the samples to physiological temperature. Materials and Methods: The spectra of collimated transmission, total transmission and diffuse reflection of rat muscle tissue were recorded. The spectra were recorded at 25°C (room temperature) and 38–39°C (physiological temperature). For each measured point of the sample, the spectral dependences of the absorption coefficients, transport scattering coefficient, and anisotropy factor of the studied samples were calculated. Results and conclusion: It has been shown that the optical properties of muscle tissue differ for room and physiological temperatures. In this case, the absorption and scattering coefficients practically do not change. The main parameter that changes with temperature is the anisotropy factor. This change also leads to a change in the transport scattering coefficient. |
| first_indexed | 2024-04-13T13:10:59Z |
| format | Article |
| id | doaj.art-b0f3697c6cf94f16bacbfd899544cd60 |
| institution | Directory Open Access Journal |
| issn | 1817-3020 2542-193X |
| language | English |
| last_indexed | 2024-04-13T13:10:59Z |
| publishDate | 2022-11-01 |
| publisher | Saratov State University |
| record_format | Article |
| series | Известия Саратовского университета. Новая серия Серия: Физика |
| spelling | doaj.art-b0f3697c6cf94f16bacbfd899544cd602022-12-22T02:45:36ZengSaratov State UniversityИзвестия Саратовского университета. Новая серия Серия: Физика1817-30202542-193X2022-11-0122435035610.18500/1817-3020-2022-22-4-350-356Differences in optical properties of rat muscle tissue at room and physiological temperaturesGamayunova, Ekaterina Алексеевна0Doronkina, Anna A.1Lazareva, Ekaterina Nikolaevna2Tuchina, Daria K.3Kochubey, Vyacheslav Ivanovich4Yanina, Irina Iur'evna5Saratov State University, 410012, Russia, Saratov, Astrakhanskaya street, 83Saratov State University, 410012, Russia, Saratov, Astrakhanskaya street, 83Saratov State University, 410012, Russia, Saratov, Astrakhanskaya street, 83Saratov State University, 410012, Russia, Saratov, Astrakhanskaya street, 83Saratov State University, 410012, Russia, Saratov, Astrakhanskaya street, 83Saratov State University, 410012, Russia, Saratov, Astrakhanskaya street, 83Background and Objectives: Knowledge of the optical and thermal human tissues properties is essential for optimizing laser therapy and optical diagnostics. Most studies are carried out at room temperature of the sample. At the same time, it is known that the optical properties of biological tissues depend on temperature even in the physiological temperature range, that is, in the range of normal functioning of the body. Accordingly, there is a possibility that the use of literature data will lead to an incorrect assessment of the conditions for the propagation of light through biological tissue in a living object. Incorrect data on the optical properties of biological tissues at physiological temperature can lead to unreliable results in medical optical diagnostics or therapy. Therefore, studies of the temperature dependences of the optical properties of biological objects are undoubtedly topical. This work shows the differences in the optical properties of rat muscle tissue before and after heating the samples to physiological temperature. Materials and Methods: The spectra of collimated transmission, total transmission and diffuse reflection of rat muscle tissue were recorded. The spectra were recorded at 25°C (room temperature) and 38–39°C (physiological temperature). For each measured point of the sample, the spectral dependences of the absorption coefficients, transport scattering coefficient, and anisotropy factor of the studied samples were calculated. Results and conclusion: It has been shown that the optical properties of muscle tissue differ for room and physiological temperatures. In this case, the absorption and scattering coefficients practically do not change. The main parameter that changes with temperature is the anisotropy factor. This change also leads to a change in the transport scattering coefficient.https://fizika.sgu.ru/sites/fizika.sgu.ru/files/text-pdf/2022/11/fizika_2022_4-67-73.pdfmuscle tissuephysiological temperaturespectral properties |
| spellingShingle | Gamayunova, Ekaterina Алексеевна Doronkina, Anna A. Lazareva, Ekaterina Nikolaevna Tuchina, Daria K. Kochubey, Vyacheslav Ivanovich Yanina, Irina Iur'evna Differences in optical properties of rat muscle tissue at room and physiological temperatures Известия Саратовского университета. Новая серия Серия: Физика muscle tissue physiological temperature spectral properties |
| title | Differences in optical properties of rat muscle tissue at room and physiological temperatures |
| title_full | Differences in optical properties of rat muscle tissue at room and physiological temperatures |
| title_fullStr | Differences in optical properties of rat muscle tissue at room and physiological temperatures |
| title_full_unstemmed | Differences in optical properties of rat muscle tissue at room and physiological temperatures |
| title_short | Differences in optical properties of rat muscle tissue at room and physiological temperatures |
| title_sort | differences in optical properties of rat muscle tissue at room and physiological temperatures |
| topic | muscle tissue physiological temperature spectral properties |
| url | https://fizika.sgu.ru/sites/fizika.sgu.ru/files/text-pdf/2022/11/fizika_2022_4-67-73.pdf |
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