FLUORESCENCE BASED FLOW IMAGING AND MEASUREMENTS
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United States of America Patent
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Issued Date -
Jan 7, 2021
app pub date -
Sep 24, 2020
filing date -
Jul 6, 2015
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Abstract
Fluorescence based tracking of a light-emitting marker in a bodily fluid stream is conducted by: providing a light-emitting marker into a fluid stream; establishing field of view monitoring by placement of a sensor, such as a high speed camera, at a region of interest; recording image data of light emitted by the marker at the region of interest; determining time characteristics of the light output of the marker traversing the field of view; and calculating flow characteristics based on the time characteristics. Furthermore generating a velocity vector map may be conducted using a cross correlation technique, leading and falling edge considerations, subtraction, and/or thresholding.
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