Optical tissue diagnosis through the experienced doctor's eye has long been a prime method in medical examinations. Through the development of endoscopic techniques, it has also become possible to gain optical access to many inner organs, such as the lungs, urinary bladder, gastrointestinal tract, and larger vessels. Through the biopsy channel of such fiber optic instruments, it is also possible to collect specimens for histopathological investigation and to perform treatment procedures such as employing laser radiation. An extension of the optical diagnosis using reflected light is provided by the fluorescence phenomenon.
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Publish Date: 01 October 1992
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