Arrangement and method for diagnosing malignant tissue by fluorescence observation
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United States of America Patent
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May 9, 2000
Grant Date -
N/A
app pub date -
Mar 24, 1997
filing date -
Mar 29, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to an arrangement and method for diagnosing malignant tissue by fluorescence observation with an endoscope. A stroboscope is used as a white light source in order to illuminate the interesting tissue region through the endosocope. A laser is simultaneously used in order to stimulate the fluorescence. At a time, the analyzer is activated in the dark phase between two light flashes of the stroboscope and deactivated during a visible light flash. The tissue, with a continuous fluorescence stimulation by exposure to light with a stimulating wavelength, may be observed under a pseudo-white light. The spectrogram may be represented on a screen which displays a normal white light endoscopic picture.
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