Endoscope system, processor device thereof, and method for displaying endoscopic video image
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United States of America Patent
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Jul 21, 2015
Grant Date -
Sep 12, 2013
app pub date -
Feb 8, 2013
filing date -
Mar 12, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
In a special mode, a first frame image including a blue signal B1, a green signal G1, and a red signal R1 is captured in a first frame period. In a second frame period, a second frame image including a blue signal B2, a green signal G2, and a red signal R2 is captured. An oxygen saturation level calculator calculates an oxygen saturation level of each pixel based on signal ratios B1/G2 and R2/G2, and sequentially outputs obtained special images on a monitor. Whenever the special image is produced, a signal ratio R2/R1 is calculated. When the signal ratio R2/R1 exceeds a threshold value, a warning sign “!!” is displayed. When the signal ratio R2/R1 is larger than a predetermined range S, a warning sign “HIGH StO2” is displayed. When the signal ratio R2/R1 is smaller than the range S, a warning sign “LOW StO2” is displayed.
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