Journal
HISTOPATHOLOGY
Volume 78, Issue 6, Pages 791-804Publisher
WILEY
DOI: 10.1111/his.14304
Keywords
artificial intelligence; digital pathology; image analysis; machine learning; renal transplant pathology
Categories
Funding
- National Institutes of Health (NIH) National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) [1R21DK122229-01]
- Emory University Synergy Grant
- NIH National Cancer Institute (NCI) [U01CA220401, U24CA19436201]
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Whole slide imaging (WSI) is an important technique in digital pathology, leading to increased interest in image analysis (IA) techniques, including artificial intelligence (AI) and hypothesis-driven algorithms. Renal pathology, particularly in renal transplant pathology, has seen a rise in research using AI/machine learning for identification of features such as glomeruli. Deep learning methods like artificial neural networks (ANNs)/ convolutional neural networks (CNNs) are commonly employed for analyzing 'big data' in pathology WSIs.
Whole slide imaging, which is an important technique in the field of digital pathology, has recently been the subject of increased interest and avenues for utilisation, and with more widespread whole slide image (WSI) utilisation, there will also be increased interest in and implementation of image analysis (IA) techniques. IA includes artificial intelligence (AI) and targeted or hypothesis-driven algorithms. In the overall pathology field, the number of citations related to these topics has increased in recent years. Renal pathology is one anatomical pathology subspecialty that has utilised WSIs and IA algorithms; it can be argued that renal transplant pathology could be particularly suited for whole slide imaging and IA, as renal transplant pathology is frequently classified by use of the semiquantitative Banff classification of renal allograft pathology. Hypothesis-driven/targeted algorithms have been used in the past for the assessment of a variety of features in the kidney (e.g. interstitial fibrosis, tubular atrophy, inflammation); in recent years, the amount of research has particularly increased in the area of AI/machine learning for the identification of glomeruli, for histological segmentation, and for other applications. Deep learning is the form of machine learning that is most often used for such AI approaches to the 'big data' of pathology WSIs, and deep learning methods such as artificial neural networks (ANNs)/convolutional neural networks (CNNs) are utilised. Unsupervised and supervised AI algorithms can be employed to accomplish image or semantic classification. In this review, AI and other IA algorithms applied to WSIs are discussed, and examples from renal pathology are covered, with an emphasis on renal transplant pathology.
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