
1.Center for Advanced Imaging, Faculty of Arts and Sciences, Harvard University, Cambridge, MA, USA
2.Department of Electronic and Telecommunication Engineering, University of Moratuwa, Moratuwa, Sri Lanka
3.Department of Mechanical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02139, USA
4.Laser Biomedical Research Center, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02139, USA
5.Department of Biological Engineering, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02139, USA
6.Picower Institute for Learning and Memory, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02139, USA
7.Department of Neuroscience, Cleveland Clinic Lerner Research Institute, Cleveland, OH 44195, USA
Dushan N. Wadduwage (wadduwage@fas.harvard.edu)
Published:31 October 2023,
Published Online:13 September 2023,
Received:01 March 2023,
Revised:21 July 2023,
Accepted:29 July 2023
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Wijethilake, N. et al. DEEP-squared: deep learning powered De-scattering with Excitation Patterning. Light: Science & Applications, 12, 2199-2214 (2023).
Wijethilake, N. et al. DEEP-squared: deep learning powered De-scattering with Excitation Patterning. Light: Science & Applications, 12, 2199-2214 (2023). DOI: 10.1038/s41377-023-01248-6.
Limited throughput is a key ch
allenge in in vivo deep tissue imaging using nonlinear optical microscopy. Point scanning multiphoton microscopy
the current gold standard
is slow especially compared to the widefield imaging modalities used for optically cleared or thin specimens. We recently introduced "De-scattering with Excitation Patterning" or "DEEP" as a widefield alternative to point-scanning geometries. Using patterned multiphoton excitation
DEEP encodes spatial information inside tissue before scattering. However
to de-scatter at typical depths
hundreds of such patterned excitations were needed. In this work
we present DEEP
2
a deep learning-based model that can de-scatter images from just tens of patterned excitations instead of hundreds. Consequently
we improve DEEP's throughput by almost an order of magnitude. We demonstrate our method in multiple numerical and experimental imaging studies
including in vivo cortical vasculature imaging up to 4 scattering lengths deep in live mice.
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