JELE_V3_N4_RP2 Punitha M. Vijaykumar J. Journal on Electronics Engineering 2249 – 0760 3 4 13 18 Biomedical Image Processing, Pleural Effusion (PE) A pleural effusion is an abnormal amount of fluid around the lung. Pleural effusions can result from many medical conditions. Most pleural effusions are not serious by themselves, but some require treatment to avoid problems. The pleura is a thin membrane that lines the surface of the lungs and the inside of the chest wall outside the lungs. In pleural effusions, fluid accumulates in the space between the layers of pleura. Normally, only teaspoons of watery fluid are present in the pleural space, allowing the lungs to move smoothly within the chest cavity during breathing. Pleural effusion is an important biomarker for the diagnosis of many diseases. This paper aims to develop an automated method to evaluate pleural effusion on CT scans, the measurement of which is prohibitively time consuming when performed manually. The method is based on parietal and visceral pleura extraction, active contour models, region growing etc. 2D gray scale image is taken as as input and PE is segmented by using region growing method. June – August 2013 Copyright © 2013 i-manager publications. All rights reserved. i-manager Publications http://www.imanagerpublications.com/Article.aspx?ArticleId=2393