翻訳と辞書 Words near each other ・ Near-equatorial orbit ・ Near-equilibrium enzymatic flux transfer networks ・ Near-extremal black hole ・ Near-fall ・ Near-far problem ・ Near-field (mathematics) ・ Near-field electromagnetic ranging ・ Near-field magnetic induction communication ・ Near-field optics ・ Near-field scanner ・ Near-field scanning optical microscope ・ Near-front vowel ・ Near-horizon metric ・ Near-infrared signature management technology ・ Near-infrared spectroscopy ・ Near-infrared window in biological tissue ・ Near-Life Experience ・ Near-me area network ・ Near-miss Johnson solid ・ Near-open central vowel ・ Near-open front unrounded vowel ・ Near-open vowel ・ Near-ring ・ Near-semiring ・ Near-sourcing ・ Near-surface geophysics ・ Near-term digital radio ・ Near-threatened species ・ Nearables ・ Nearby Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Near-infrared window in biological tissue ： ウィキペディア英語版 Near-infrared window in biological tissue The near-infrared (NIR) window (also known as optical window or therapeutic window) defines the range of wavelengths from 650 to 1350 nm where light has its maximum depth of penetration in tissue. Within the NIR window, scattering is the most dominant light-tissue interaction, and therefore the propagating light becomes diffused rapidly. Since scattering increases the distance travelled by photons within tissue, the probability of photon absorption also increases. Because scattering has weak dependence on wavelength, the NIR window is primarily limited by the light absorption of blood at short wavelengths and water at long wavelengths. The technique using this window is called NIRS. Medical imaging techniques such as fluorescence image-guided surgery often make use of the NIR window to detect deep structures. ==Absorption properties of tissue components== The absorption coefficient ($\backslash mu\_$) is defined as the probability of photon absorption in tissue per unit path length.〔LV. Wang and HI. Wu, Biomedical Optics. Wiley. ISBN 978-0-471-74304-0, 2007.〕 Different tissue components have different $\backslash mu\_a$ values. Moreover, $\backslash mu\_a$ is a function of wavelength. Below are discussed the absorption properties of the most important chromophores in tissue. The molar extinction coefficient ($\backslash varepsilon\; \backslash ,$) is another parameter that is used to describe photon absorption in tissue. By multiplying e by the molar concentration and by ln(10), one can convert $\backslash varepsilon\; \backslash ,$ to $\backslash mu\_a\; \backslash ,$. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Near-infrared window in biological tissue」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.