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Automatic pulmonary nodule detection in Computer Tomographic (CT) images is a challenge task for the Computer Aided Diagnosis (CAD) systems. This paper proposes a novel nodule enhancement filter (Homocentric Squares Filter) for automatic nodule detection based on CT characteristic and shape feature. First, the bright regions in the image are enhanced by calculating the CT value variation between an...
Nodule detection is a vital step in computer-aided diagnosis (CAD) system, for its accuracy can greatly influence the reliability of the system. Many researchers have proposed lots of effective filters to detect nodules. However, these filters have limitations, such as changing the nodules shapes and sizes. This paper proposes a modified Difference of Gaussian (DoG) detector for pulmonary nodule location...
A computer-aided hepatocellular carcinoma system is introduced in this paper. Tumor size and tumor intensity changes are heavily referenced in clinical practice while diagnosing hepatocellular carcinoma. In the enhancement scanning, the tumor might have different intensity appearance in three consecutive phases: arterial phase, portal vein phase and delay phase. By comparing the intensity of tumor...
To develop a computer aided detection system that improves diagnostic accuracy of lung cancer on thoracic CT. A novel method for CT image segmentation of lung is proposed, with which, several regions that are suspicious of cancer can be segmented rapidly and effectively. Algorithm of extracting pulmonary parenchyma was introduced firstly to extract pulmonary parenchyma. Secondly, FCM was employed...
The occupational hazard assessment of construction project implemented currently in China plays an important role in early prevention of occupational diseases. But the assessment techniques and methods are mostly based on qualitative mode or experience mode. There are still not unified and clear assessment methods and quantitative models to evaluate the chronic and potential cancer risk of chemicals...
Both natural computing and fuzzy method exhibit human-like mental processing. Natural computing is the field of research that works with computational techniques inspired in part by natural systems. Fuzzy method is an alternative to traditional notions of set membership and logic, and it occurs in many applications of engineering, science and medicine. This paper presents a survey of recent advances...
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