4.7 Article

Conditional GANs based system for fibrosis detection and quantification in Hematoxylin and Eosin whole slide images

Journal

MEDICAL IMAGE ANALYSIS
Volume 81, Issue -, Pages -

Publisher

ELSEVIER
DOI: 10.1016/j.media.2022.102537

Keywords

Digital pathology; Chronic liver disease; Whole slide images; Deep learning; Generative adversarial networks

Funding

  1. U.S. National Science Foundation (NSF)
  2. [CNS1828521]

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This study proposes a novel digital pathology system that accurately detects and quantifies the footprint of fibrous tissue in HE whole slide images. By using a deep learning model to generate virtual MT images, the system achieved significant improvement over traditional methods in the experiments.
Assessing the degree of liver fibrosis is fundamental for the management of patients with chronic liver disease, in liver transplants procedures, and in general liver disease research. The fibrosis stage is best assessed by histo-pathologic evaluation, and Masson's Trichrome stain (MT) is the stain of choice for this task in many laboratories around the world. However, the most used stain in histopathology is Hematoxylin Eosin (HE) which is cheaper, has a faster turn-around time and is the primary stain routinely used for evaluation of liver specimens. In this paper, we propose a novel digital pathology system that accurately detects and quantifies the footprint of fibrous tissue in HE whole slide images (WSI). The proposed system produces virtual MT images from HE using a deep learning model that learns deep texture patterns associated with collagen fibers. The training pipeline is based on conditional generative adversarial networks (cGAN), which can achieve accurate pixel-level transformation. Our comprehensive training pipeline features an automatic WSI registration algorithm, which qualifies the HE/MT training slides for the cGAN model. Using liver specimens collected during liver transplantation procedures, we conducted a range of experiments to evaluate the detected footprint of selected anatomical features. Our eval-uation includes both image similarity and semantic segmentation metrics. The proposed system achieved enhanced results in the experiments with significant improvement over the state-of-the-art CycleGAN learning style, and over direct prediction of fibrosis in HE without having the virtual MT step.

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