An experimental study of interstitial lung tissue classification in HRCT images using ANN and role of cost functions

Jatindra K. Dash; Mandar Kale; Sudipta Mukhopadhyay; Niranjan Khandelwal; Nidhi Prabhakar; Mandeep Garg; Naveen Kalra

doi:10.1117/12.2254343

3 March 2017 An experimental study of interstitial lung tissue classification in HRCT images using ANN and role of cost functions

Jatindra K. Dash, Mandar Kale, Sudipta Mukhopadhyay, Niranjan Khandelwal, Nidhi Prabhakar, Mandeep Garg, Naveen Kalra

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Proceedings Volume 10134, Medical Imaging 2017: Computer-Aided Diagnosis; 101343U (2017) https://doi.org/10.1117/12.2254343
Event: SPIE Medical Imaging, 2017, Orlando, Florida, United States

Abstract

In this paper, we investigate the effect of the error criteria used during a training phase of the artificial neural network (ANN) on the accuracy of the classifier for classification of lung tissues affected with Interstitial Lung Diseases (ILD). Mean square error (MSE) and the cross-entropy (CE) criteria are chosen being most popular choice in state-of-the-art implementations. The classification experiment performed on the six interstitial lung disease (ILD) patterns viz. Consolidation, Emphysema, Ground Glass Opacity, Micronodules, Fibrosis and Healthy from MedGIFT database. The texture features from an arbitrary region of interest (AROI) are extracted using Gabor filter. Two different neural networks are trained with the scaled conjugate gradient back propagation algorithm with MSE and CE error criteria function respectively for weight updation. Performance is evaluated in terms of average accuracy of these classifiers using 4 fold cross-validation. Each network is trained for five times for each fold with randomly initialized weight vectors and accuracies are computed. Significant improvement in classification accuracy is observed when ANN is trained by using CE (67.27%) as error function compared to MSE (63.60%). Moreover, standard deviation of the classification accuracy for the network trained with CE (6.69) error criteria is found less as compared to network trained with MSE (10.32) criteria.

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Jatindra K. Dash, Mandar Kale, Sudipta Mukhopadhyay, Niranjan Khandelwal, Nidhi Prabhakar, Mandeep Garg, and Naveen Kalra "An experimental study of interstitial lung tissue classification in HRCT images using ANN and role of cost functions", Proc. SPIE 10134, Medical Imaging 2017: Computer-Aided Diagnosis, 101343U (3 March 2017); https://doi.org/10.1117/12.2254343

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KEYWORDS

Lung

Image classification

Tissues

Databases

Feature extraction

Information visualization

Neural networks

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