Quantitative oblique-back-illumination microscopy (qOBM) enables quantitative phase imaging (QPI) with epi-illumination, and thus permits the use of phase contrast in applications that were previously out-of-reach for QPI, including clinical medicine. Here, I will discuss our latest efforts to apply qOBM for clinical applications, specifically tissue imaging for non-invasive diagnostics and image guided therapy. Our approach uses an unsupervised cycle generative adversarial networks to translate 3D phase images of thick fresh tissues to appear like H&E-stained tissue sections. This work paves the way for non-invasive, label-free, real-time 3D H&E imaging which can be transformative for disease detection and guided therapy.
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