US 11,986,269 B2
Spatiotemporal antialiasing in photoacoustic computed tomography
Lihong Wang, Arcadia, CA (US); Peng Hu, Pasadena, CA (US); and Lei Li, Arcadia, CA (US)
Assigned to California Institute of Technology, Pasadena, CA (US)
Filed by California Institute of Technology, Pasadena, CA (US)
Filed on Nov. 5, 2020, as Appl. No. 17/090,752.
Claims priority of provisional application 62/931,024, filed on Nov. 5, 2019.
Prior Publication US 2021/0132005 A1, May 6, 2021
Int. Cl. G01N 29/42 (2006.01); A61B 5/00 (2006.01); A61B 8/13 (2006.01); G01N 29/06 (2006.01); G01N 29/24 (2006.01)
CPC A61B 5/0095 (2013.01) [A61B 8/13 (2013.01); G01N 29/0672 (2013.01); G01N 29/2418 (2013.01); G01N 29/42 (2013.01); G01N 2291/02475 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A photoacoustic computed tomography method, comprising:
acquiring photoacoustic data recorded by one or more data acquisition devices of a photoacoustic computed tomography system;
applying location-based temporal filtering to the photoacoustic data acquired, wherein applying the location-based temporal filtering comprises
determining an upper cutoff frequency based at least in part on geometry of an ultrasonic transducer array of the photoacoustic computed tomography system and
applying one or more lowpass filters with the upper cutoff frequency; and
reconstructing one or more photoacoustic images from the filtered photoacoustic data.