Computer-aided diagnosis of Solitary Pulmonary Nodules in Chest X-ray images

Publish Year: 1393
نوع سند: مقاله کنفرانسی
زبان: English
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TDCONF01_119

تاریخ نمایه سازی: 19 تیر 1394

Abstract:

Computer-aided detection (CAD) of pulmonary nodules is critical to assisting radiologists in early identification of lung cancer from computed tomography (CT) scans. This paper describes a Computer-Aided Diagnosis (CAD) system for automatic pulmonary nodules detection on serial CT scans based on Support vector machine classification (SVM) scheme which the size of the nodules are greater than 8mm. Compared with the simple thresholding approach, the SVM yields a more accurate segmentation of the lungs from the chest volume. to identifying initial nodule candidates within the lungs, the proposed system proves to be effective for initial nodule candidates detection and segmentation, as well as existing approaches. False-positive is reduced by rule-based filtering operations in combination with a feature-based support SVM classifier. The proposed system was validated on 47 patient cases from the publically available on-line LIDC (Lung Image Database consortium) database. Experimental results show that our system obtained an overall sensitivity of 89.9 % at a specificity of 4.0 FPs/scan. With respect to comparable previous system, the proposed system shows outperformance and demonstrates its potential for best detection of pulmonary nodules via CT imaging

Authors

Athena Hosseinpour

Department of Computer, Islamic Azad University, Guilan, Iran

Farshid Mehrdoust

Department of Computer, Islamic Azad University, Guilan, Iran

Mohsen salehi

Department of Computer, Imam Reza University, Mashhad, Iran

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