US 12,003,861 B2
Systems and methods for mitigating artifacts in medical imaging
Benjamin Hyman Feingold, San Francisco, CA (US); Marc André, Spiegel b. Bern (CH); Levey Trac Tran, Denver, CO (US); and Rohit Subramanian, San Jose, CA (US)
Assigned to Stryker Corporation, Kalamazoo, MI (US)
Filed by Stryker Corporation, Kalamazoo, MI (US)
Filed on Dec. 22, 2021, as Appl. No. 17/560,156.
Claims priority of provisional application 63/132,444, filed on Dec. 30, 2020.
Prior Publication US 2022/0210309 A1, Jun. 30, 2022
Int. Cl. H04N 23/72 (2023.01); A61B 1/00 (2006.01); A61B 1/005 (2006.01); A61B 1/05 (2006.01); A61B 1/06 (2006.01); A61B 1/04 (2006.01); H04N 23/50 (2023.01)
CPC H04N 23/72 (2023.01) [A61B 1/00009 (2013.01); A61B 1/005 (2013.01); A61B 1/05 (2013.01); A61B 1/0684 (2013.01); A61B 1/042 (2013.01); H04N 23/555 (2023.01)] 26 Claims
OG exemplary drawing
 
1. A method of imaging tissue of a subject using a rolling shutter imager to provide a video stream, the method comprising:
sequentially resetting a plurality of rows of pixels of the rolling shutter imager from a first row to a last row;
transitioning a liquid crystal shutter from a closed state to an open state;
after the liquid crystal shutter is transitioned into the open state and after resetting the last row, illuminating the tissue of the subject with an illumination light for an illumination period to accumulate charge at the plurality of rows of pixels, and
after the illumination period ends, sequentially reading the accumulated charge at the rows of pixels from the first row to the last row;
generating an image frame from the sequentially read accumulated charge at the plurality of rows of pixels; and
adding the image frame to the video stream.