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'Golden Window' Eyed for Deeper Tissue Imaging

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Longer wavelengths in the near-infrared range may offer a "golden window" for noninvasive but deep imaging of brain and breast tissue, City College of New York researchers have proposed. Current one- and two-photon fluorescence imaging techniques for deep brain imaging use the "optical window I" near-infrared (NIR) wavelength range, 650 to 950 nm. Theoretical and experimental work led by CCNY research associate Lingyan Shi points to three new optical windows at longer NIR wavelengths that experience reduced scattering in biological tissue. Optical window III, from 1600 to 1880 nm,...Read full article

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