Automated Pulmonary Lung Nodule Detection Using an Optimal Manifold Statistical Based Feature Descriptor and SVM Classifier

Authors

  • Ammi Reddy Pulagam Vasireddy Venkatadri Institute of Technology
  • Venkata Krıshna Rao Ede Lakireddy Bali Reddy College of Engineering, Mylavaram, Vijayawada, AP, India
  • Ramesh Babu Inampudi Acharya Nagrjuna University, Nagarjuna Nagar Guntur, AP, India

DOI:

https://doi.org/10.14738/jbemi.43.3354

Keywords:

computed tomography, lung cancer, pulmonary nodules, statistical thresholding, SVM.

Abstract

The pulmonary lung nodule is the most common indicator of lung cancer. An efficient automated pulmonary nodule detection system aids the radiologists to detect the lung abnormalities at an early stage. In this paper, an automated lung nodule detection system using a feature descriptor based on optimal manifold statistical thresholding to segment lung nodules in Computed Tomography (CT) scans is presented. The system comprises three processing stages. In the first stage, the lung region is extracted from thoracic CT scans using gray level thresholding and 3D connected component labeling. After that novel lung contour correction method is proposed using modified convex hull algorithm to correct the border of a diseased lung. In the second stage, optimal manifold statistical image thresholding is described to minimize the discrepancy between nodules and other tissues of the segmented lung region. Finally, a set of 2D and 3D features are extracted from the nodule candidates, and then the system is trained by employing support vector machines (SVM) to classify the nodules and non-nodules. The performance of the proposed system is assessed using Lung TIME database. The system is tested on 148 cases containing 36408 slices with total sensitivity of 94.3%, is achieved with only 2.6 false positives per scan.

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Published

2017-09-05

How to Cite

Pulagam, A. R., Ede, V. K. R., & Inampudi, R. B. (2017). Automated Pulmonary Lung Nodule Detection Using an Optimal Manifold Statistical Based Feature Descriptor and SVM Classifier. British Journal of Healthcare and Medical Research, 4(4), 20. https://doi.org/10.14738/jbemi.43.3354