Subwavelength motion-correction for ultrafast ultrasound localization microscopy.
Ultrafast Ultrasound Localization Microscopy uses microbubbles that are individually localized with a resolution below 10μm. Positions of the microbubbles are accumulated to create a super resolution image, which bypass the diffraction-limit of spatial resolution. However, microbubbles localization is affected by physiological motions at the micrometric scale. Here, we demonstrate a phase correlation method for rigid motion correction. Spatiotemporal filters extract tissue dominated images, which are tracked to correct linear motions and improve the precision of microbubbles' localization, improving the quality of the image. It is the first proof of concept towards a full motion correction strategy and super-resolution imaging in moving tissues.
Institut Langevin, CNRS, INSERM, ESPCI Paris, PSL Research University, 17 rue Moreau, 75012 Paris, France. Electronic address: vincent.hingot@espci.fr.
Vincent
V
Hingot
Institut Langevin, CNRS, INSERM, ESPCI Paris, PSL Research University, 17 rue Moreau, 75012 Paris, France.
Claudia
C
Errico
Institut Langevin, CNRS, INSERM, ESPCI Paris, PSL Research University, 17 rue Moreau, 75012 Paris, France.
Mickael
M
Tanter
Institut Langevin, CNRS, INSERM, ESPCI Paris, PSL Research University, 17 rue Moreau, 75012 Paris, France. Electronic address: olivier.couture@espci.fr.
Olivier
O
Couture
Phase correlation; Spatio-temporal filters; Subwavelength motion correction; Ultrafast Ultrasound Localization Microscopy