We present new gas flow models for the Milky Way inside the solar circle. We use SPH simulations in gravitational potentials determined from the NIR luminosity distribution of the bulge and disk, assuming constant NIR mass-to-light ratio, with an outer halo added in some cases. The luminosity models are based on the COBE/DIRBE maps and on clump giant star counts in several bulge fields, and inc...

This paper described the analysis and design of a square spiral Microstrip. The spiral is formed by introducing slot in a square patch. This spiral design is introduced to use a single structure for dual band/frequency operations by adding tuning elements. The design parameters for a rectangular patch antenna have been calculated from the transmission line model and using MATLAB. The simulation...

The diagnosis of pulmonary sequestration traditionally requires arteriography to identify abnormal systemic vessels feeding the abnormal portion of the lung. Non-invasive imaging techniques have recently been used to replace arteriography. Conventional computed tomographic (CT) scanning is, however, at a disadvantage because of its inability to obtain multiplanar images. The combination of slip...

The response of a point object in cone beam spiral scan is analysed. Based on the result a sufficient condition for the spiral scan long object problem employing backprojection is formulated. By making use of the sufficient condition a general class of exact, backprojection based reconstruction algorithms for spiral scan cone beam CT is developed which are capable of reconstructing a sectional ...

pulmonary embolism is considered as a great masquerader due to its frequent nonspecific signs and symptoms. typically pulmonary embolism is under-diagnosed or over-diagnosed. in this study a patient with pulmonary embolism is reported in which the patient exhibited two unusual manifestations namely; right upper quadrant abdominal pain and st-t elevation in anterior precordial leads. due to the ...

The aim of this study is to investigate the feasibility of eliminating the nephrographic phase from the four-phase renal computed tomography (CT) imaging to a three-phase protocol without affecting its diagnostic value. Thirty patients undergoing four-phase renal CT scans for assessment of renal lesions (>10 mm) were included in the study. A three-phase renal CT, without nephrographic phase, ha...

CONTEXT Accessory mental foramen is a rare anatomical variation. Even so, in order to avoid neurovascular complications, particular attention should be paid to the possible occurrence of one or more accessory mental foramen during surgical procedures involving the mandible. CASE REPORT A 3-dimensional computed tomography (3D-CT) scan of a female patient revealed an accessory mental foramen on...