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Title: Computational microscopy for fast widefield deep-tissue fluorescence imaging using a commercial dual-cannula probe

Journal Article · · Optics Continuum

A solid-glass cannula serves as a micro-endoscope that can deliver excitation light deep inside tissue while also collecting emitted fluorescence. Then, we utilize deep neural networks to reconstruct images from the collected intensity distributions. By using a commercially available dual-cannula probe, and training a separate deep neural network for each cannula, we effectively double the field of view compared to prior work. We demonstrated ex vivo imaging of fluorescent beads and brain slices and in vivo imaging from whole brains. We clearly resolved 4 µm beads, with FOV from each cannula of 0.2 mm (diameter), and produced images from a depth of ∼1.2 mm in the whole brain, currently limited primarily by the labeling. Since no scanning is required, fast widefield fluorescence imaging limited primarily by the brightness of the fluorophores, collection efficiency of our system, and the frame rate of the camera becomes possible.

Research Organization:
Univ. of Utah, Salt Lake City, UT (United States)
Sponsoring Organization:
USDOE Office of Science (SC); National Institutes of Health (NIH)
Grant/Contract Number:
55801063; SC0021996; 1R21EY030717-01
OSTI ID:
1887618
Alternate ID(s):
OSTI ID: 1884321
Journal Information:
Optics Continuum, Journal Name: Optics Continuum Vol. 1 Journal Issue: 9; ISSN 2770-0208
Publisher:
Optical Society of AmericaCopyright Statement
Country of Publication:
United States
Language:
English

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