computer aided pulmonary nodule detection has been among major research topics lately to help for early treatment of lung cancer which is the most lethal kind of cancer worldwide.some evidence suggests that periodic screening tests with the ct of patients will help in reducing the mortality rate caused by the lung cancer. acomplete and accurate computer aided diagnosis (cad) system for detectio...

In biometrics, a human being needs to be identified based on some characteristic physiological parameters. A wide variety of systems require reliable personal recognition schemes to either confirm or determine the identity of an individual requesting their services. The purpose of such schemes is to ensure that the rendered services are accessed only by a legitimate user, and not anyone else. B...

Accurate extraction of retinal blood vessels is an important task in computer aided diagnosis of retinopathy. The matched filter (MF) is a simple yet effective method for vessel extraction. However, a MF will respond not only to vessels but also to non-vessel edges. This will lead to frequent false vessel detection. In this paper we propose a novel extension of the MF approach, namely the MF-FD...

Vascular calcification is the abnormal deposition of calcium phosphate complexes in blood vessels, which regarded as pathological basis multiple cardiovascular diseases. The flowing exerts a frictional force called shear stress on vascular wall. Blood vessels have different hydrodynamic properties due to discrepancies geometric and mechanical properties. disturbance flow bending area branch poi...

Ships and submarines radiate sound into the water as an inevitable by-product of the mechanical energy required to propel them. For military surface vessels the characteritics of the radiated underwater sound can be a critical factor in determining the vulnerability of the vessel to detection, and consequently considerable effort is put into characterising and minimising the radiation from thes...

We applied photoacoustics for noninvasive two-dimensional imaging of blood vessels in vivo, using near infrared light. This study was undertaken to develop photoacoustic tomography of tissue for the detection of embedded blood vessels using a newly developed piezoelectric double ring detector, featuring an extremely narrow aperture.

The work herein presented aims at improving the detection of the fovea and optic disk anatomical structures in color fundus photographs from patients with visible lesions. The detection algorithm consists of five steps: selection of an area in the image where the optic disk is located using Sobel operator, extraction of optic disk boundaries applying the Hough transform to detect center and dia...