Unsupervised inter-domain transformation for virtually stained high-resolution mid-infrared photoacoustic microscopy using explainable deep learning

Abstract Mid-infrared photoacoustic microscopy can capture biochemical information without staining. However, the long mid-infrared optical wavelengths make the spatial resolution of photoacoustic microscopy significantly poorer than that of conventional confocal fluorescence microscopy. Here, we de...

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Main Authors: Eunwoo Park, Sampa Misra, Dong Gyu Hwang, Chiho Yoon, Joongho Ahn, Donggyu Kim, Jinah Jang, Chulhong Kim
Format: Article
Language:English
Published: Nature Portfolio 2024-12-01
Series:Nature Communications
Online Access:https://doi.org/10.1038/s41467-024-55262-2
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author Eunwoo Park
Sampa Misra
Dong Gyu Hwang
Chiho Yoon
Joongho Ahn
Donggyu Kim
Jinah Jang
Chulhong Kim
author_facet Eunwoo Park
Sampa Misra
Dong Gyu Hwang
Chiho Yoon
Joongho Ahn
Donggyu Kim
Jinah Jang
Chulhong Kim
author_sort Eunwoo Park
collection DOAJ
description Abstract Mid-infrared photoacoustic microscopy can capture biochemical information without staining. However, the long mid-infrared optical wavelengths make the spatial resolution of photoacoustic microscopy significantly poorer than that of conventional confocal fluorescence microscopy. Here, we demonstrate an explainable deep learning-based unsupervised inter-domain transformation of low-resolution unlabeled mid-infrared photoacoustic microscopy images into confocal-like virtually fluorescence-stained high-resolution images. The explainable deep learning-based framework is proposed for this transformation, wherein an unsupervised generative adversarial network is primarily employed and then a saliency constraint is added for better explainability. We validate the performance of explainable deep learning-based mid-infrared photoacoustic microscopy by identifying cell nuclei and filamentous actins in cultured human cardiac fibroblasts and matching them with the corresponding CFM images. The XDL ensures similar saliency between the two domains, making the transformation process more stable and more reliable than existing networks. Our XDL-MIR-PAM enables label-free high-resolution duplexed cellular imaging, which can significantly benefit many research avenues in cell biology.
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publishDate 2024-12-01
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series Nature Communications
spelling doaj-art-34e041ae4bde4345a1b8e644e7a534822025-01-05T12:36:49ZengNature PortfolioNature Communications2041-17232024-12-0115111210.1038/s41467-024-55262-2Unsupervised inter-domain transformation for virtually stained high-resolution mid-infrared photoacoustic microscopy using explainable deep learningEunwoo Park0Sampa Misra1Dong Gyu Hwang2Chiho Yoon3Joongho Ahn4Donggyu Kim5Jinah Jang6Chulhong Kim7Department of Convergence IT Engineering, Pohang University of Science and Technology (POSTECH)Department of Convergence IT Engineering, Pohang University of Science and Technology (POSTECH)Medical Device Innovation Center, Pohang University of Science and Technology (POSTECH)Medical Device Innovation Center, Pohang University of Science and Technology (POSTECH)Medical Device Innovation Center, Pohang University of Science and Technology (POSTECH)Department of Convergence IT Engineering, Pohang University of Science and Technology (POSTECH)Department of Convergence IT Engineering, Pohang University of Science and Technology (POSTECH)Department of Convergence IT Engineering, Pohang University of Science and Technology (POSTECH)Abstract Mid-infrared photoacoustic microscopy can capture biochemical information without staining. However, the long mid-infrared optical wavelengths make the spatial resolution of photoacoustic microscopy significantly poorer than that of conventional confocal fluorescence microscopy. Here, we demonstrate an explainable deep learning-based unsupervised inter-domain transformation of low-resolution unlabeled mid-infrared photoacoustic microscopy images into confocal-like virtually fluorescence-stained high-resolution images. The explainable deep learning-based framework is proposed for this transformation, wherein an unsupervised generative adversarial network is primarily employed and then a saliency constraint is added for better explainability. We validate the performance of explainable deep learning-based mid-infrared photoacoustic microscopy by identifying cell nuclei and filamentous actins in cultured human cardiac fibroblasts and matching them with the corresponding CFM images. The XDL ensures similar saliency between the two domains, making the transformation process more stable and more reliable than existing networks. Our XDL-MIR-PAM enables label-free high-resolution duplexed cellular imaging, which can significantly benefit many research avenues in cell biology.https://doi.org/10.1038/s41467-024-55262-2
spellingShingle Eunwoo Park
Sampa Misra
Dong Gyu Hwang
Chiho Yoon
Joongho Ahn
Donggyu Kim
Jinah Jang
Chulhong Kim
Unsupervised inter-domain transformation for virtually stained high-resolution mid-infrared photoacoustic microscopy using explainable deep learning
Nature Communications
title Unsupervised inter-domain transformation for virtually stained high-resolution mid-infrared photoacoustic microscopy using explainable deep learning
title_full Unsupervised inter-domain transformation for virtually stained high-resolution mid-infrared photoacoustic microscopy using explainable deep learning
title_fullStr Unsupervised inter-domain transformation for virtually stained high-resolution mid-infrared photoacoustic microscopy using explainable deep learning
title_full_unstemmed Unsupervised inter-domain transformation for virtually stained high-resolution mid-infrared photoacoustic microscopy using explainable deep learning
title_short Unsupervised inter-domain transformation for virtually stained high-resolution mid-infrared photoacoustic microscopy using explainable deep learning
title_sort unsupervised inter domain transformation for virtually stained high resolution mid infrared photoacoustic microscopy using explainable deep learning
url https://doi.org/10.1038/s41467-024-55262-2
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