JIS college of engineering

The main reason behind pulmonary emphysema is mainly due to long-term smoking, and medical treatments are quite difficult. In worst cases, the structure of the lung can get damaged irreversibly. In this case, one of the most important parts is to detect the different stages of the diseases. This requires some well-trained radiologists to observe the changes in the CT scans of the patients over a period of time. But there is dearth of well trained radiologists worldwide. Hence, it would of great help if an accurate computer aided detection (CAD) system for emphysema is developed. Emphysema region classification from CT image is a time consuming process because there exists many sub-regions because of the huge size of CT image. There exists some sub-regions which contain no sign of Emphysema and the classification of these regions is meaningless. In order to speed up the process of classification, an algorithm has been proposed for selecting the Emphysema affected regions which is region of interest. Then only Emphysema affected region is used for classification instead of all of the sub-regions. General Terms Computer aided detection (CAD) system