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Deep learning-enabled realistic virtual histology with ultraviolet photoacoustic remote sensing microscopy

The goal of oncologic surgeries is complete tumor resection, yet positive margins are frequently found postoperatively using gold standard H&E-stained histology methods. Frozen section analysis is sometimes performed for rapid intraoperative margin evaluation, albeit with known inaccuracies. Her...

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Bibliographic Details
Published in:Nature communications 2023-09, Vol.14 (1), p.5967-5967, Article 5967
Main Authors: Martell, Matthew T., Haven, Nathaniel J. M., Cikaluk, Brendyn D., Restall, Brendon S., McAlister, Ewan A., Mittal, Rohan, Adam, Benjamin A., Giannakopoulos, Nadia, Peiris, Lashan, Silverman, Sveta, Deschenes, Jean, Li, Xingyu, Zemp, Roger J.
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Language:English
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Summary:The goal of oncologic surgeries is complete tumor resection, yet positive margins are frequently found postoperatively using gold standard H&E-stained histology methods. Frozen section analysis is sometimes performed for rapid intraoperative margin evaluation, albeit with known inaccuracies. Here, we introduce a label-free histological imaging method based on an ultraviolet photoacoustic remote sensing and scattering microscope, combined with unsupervised deep learning using a cycle-consistent generative adversarial network for realistic virtual staining. Unstained tissues are scanned at rates of up to 7 mins/cm 2 , at resolution equivalent to 400x digital histopathology. Quantitative validation suggests strong concordance with conventional histology in benign and malignant prostate and breast tissues. In diagnostic utility studies we demonstrate a mean sensitivity and specificity of 0.96 and 0.91 in breast specimens, and respectively 0.87 and 0.94 in prostate specimens. We also find virtual stain quality is preferred ( P  = 0.03) compared to frozen section analysis in a blinded survey of pathologists. Oncologic tumour resection is not fully accurate. Here the authors report a label-free virtual histological imaging method based on a non-contact, reflection-mode ultraviolet photoacoustic remote sensing and scattering microscope, combined with unsupervised deep learning using a cycle-consistent GAN.
ISSN:2041-1723
2041-1723
DOI:10.1038/s41467-023-41574-2