Journal
PHYSICS IN MEDICINE AND BIOLOGY
Volume 67, Issue 20, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/1361-6560/ac910a
Keywords
histopathological images; automatic analysis; deep learning
Funding
- National Natural Science Foundation of China [82072021]
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Histopathological images are crucial for disease diagnosis, patient prognosis, and treatment outcome prediction. The development of computer-automated analysis techniques for these images is in high demand in clinical practice. Traditional supervised algorithms based on large-scale annotated data face challenges, which has led to recent studies focusing on weakly supervised learning, semi-supervised learning, and self-supervised learning paradigms. These new methods have ushered in a new wave of automatic pathological image diagnosis and analysis aimed at improving annotation efficiency.
Histopathological images contain abundant phenotypic information and pathological patterns, which are the gold standards for disease diagnosis and essential for the prediction of patient prognosis and treatment outcome. In recent years, computer-automated analysis techniques for histopathological images have been urgently required in clinical practice, and deep learning methods represented by convolutional neural networks have gradually become the mainstream in the field of digital pathology. However, obtaining large numbers of fine-grained annotated data in this field is a very expensive and difficult task, which hinders the further development of traditional supervised algorithms based on large numbers of annotated data. More recent studies have started to liberate from the traditional supervised paradigm, and the most representative ones are the studies on weakly supervised learning paradigm based on weak annotation, semi-supervised learning paradigm based on limited annotation, and self-supervised learning paradigm based on pathological image representation learning. These new methods have led a new wave of automatic pathological image diagnosis and analysis targeted at annotation efficiency. With a survey of over 130 papers, we present a comprehensive and systematic review of the latest studies on weakly supervised learning, semi-supervised learning, and self-supervised learning in the field of computational pathology from both technical and methodological perspectives. Finally, we present the key challenges and future trends for these techniques.
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