Automatic Gleason grading of H and E stained microscopic prostate images using deep convolutional neural networks

Anna Gummeson; Ida Arvidsson; Mattias Ohlsson; Niels Christian Overgaard; Agnieszka Krzyzanowska; Anders Heyden; Anders Bjartell; Kalle Aström

doi:10.1117/12.2253620

1 March 2017 Automatic Gleason grading of H and E stained microscopic prostate images using deep convolutional neural networks

Anna Gummeson, Ida Arvidsson, Mattias Ohlsson, Niels Christian Overgaard, Agnieszka Krzyzanowska, Anders Heyden, Anders Bjartell, Kalle Aström

Author Affiliations +

Proceedings Volume 10140, Medical Imaging 2017: Digital Pathology; 101400S (2017) https://doi.org/10.1117/12.2253620
Event: SPIE Medical Imaging, 2017, Orlando, Florida, United States

Abstract

Prostate cancer is the most diagnosed cancer in men. The diagnosis is confirmed by pathologists based on ocular inspection of prostate biopsies in order to classify them according to Gleason score. The main goal of this paper is to automate the classification using convolutional neural networks (CNNs). The introduction of CNNs has broadened the field of pattern recognition. It replaces the classical way of designing and extracting hand-made features used for classification with the substantially different strategy of letting the computer itself decide which features are of importance. For automated prostate cancer classification into the classes: Benign, Gleason grade 3, 4 and 5 we propose a CNN with small convolutional filters that has been trained from scratch using stochastic gradient descent with momentum. The input consists of microscopic images of haematoxylin and eosin stained tissue, the output is a coarse segmentation into regions of the four different classes. The dataset used consists of 213 images, each considered to be of one class only. Using four-fold cross-validation we obtained an error rate of 7.3%, which is significantly better than previous state of the art using the same dataset. Although the dataset was rather small, good results were obtained. From this we conclude that CNN is a promising method for this problem. Future work includes obtaining a larger dataset, which potentially could diminish the error margin.

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Anna Gummeson, Ida Arvidsson, Mattias Ohlsson, Niels Christian Overgaard, Agnieszka Krzyzanowska, Anders Heyden, Anders Bjartell, and Kalle Aström "Automatic Gleason grading of H and E stained microscopic prostate images using deep convolutional neural networks", Proc. SPIE 10140, Medical Imaging 2017: Digital Pathology, 101400S (1 March 2017); https://doi.org/10.1117/12.2253620

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