BACKGROUND AND PURPOSE Stent-protected carotid angioplasty (SPAC) is an option for treating cervical symptomatic high-grade internal carotid artery (ICA) stenosis. So far, knowledge about hemodynamic changes in the early postinterventional phase is limited. The purpose of this study was to evaluate these changes. METHODS Thirty-four consecutive patients with a high-grade ICA stenosis (accordi...

Magnetohydrodynamic(MHD) peristaltic flow of a Couple Stress Fluid through a permeable channel is examined in this investigation. The flow analysis is performed in the presence of an External Magnetic Field. Long wavelength and low Reynolds number approach is implemented. Mathematical expressions of axial velocity, pressure gradient and volume flow rate are obtained. Pressure rise, frictional f...

We present a novel method for solving the incompressible Navier-Stokes equations that more accurately handles arbitrary boundary conditions and sharp geometric features in the fluid domain. It uses a space filling tetrahedral mesh, which can be created using many well known methods, to represent the fluid domain. Examples of the method’s strengths are illustrated by free surface fluid simulatio...

We have read with interest the article by Guntupalli et al (February 1997)l on the usefulness of the flow volume loop (FVL) in emergency and ICU settings. The selection of cases where the FVL can easily help to establish the level of flow impairment was well chosen by the authors. In emergency situations, the FVL is especially helpful in identifying certain abnormalities quickly by visual patte...

Flow-volume curves are the most frequently used pulmonary function test during childhood. Even pre school children are sometimes able to perform the maximal effort breathing techniques, required for this pulmonary function test. We report on the most important conditions for reliable measurement of flow-volume curves at all ages. Especially testing atmosphere and equipment, pulmonary function t...

tip leakage loss introduces major part of losses of the rotor in axial gas turbines. therefore, the rotor blade tip has a considerable effect on rotor efficiency. to understand the flow physics of the rotor tip leakage, we solve the flow field for different tip platforms (passive flow control) and by considering coolant tip injection (active flow control). various blade tip configurations such ...

A convenient method for recording pulmonary function which allows for rapid graphic bedside analysis was presented. The method involves recording flow-volume (‘V-V) loop, in correct alignment to a previously determined FRC. FRC was measured by a rapid nitrogen dilution method. This method of recording pulmonary function affords a composite of TLC and all subdivisions with corresponding flow whi...

One of the primary measurements the physician would like to acquire from a patient is that of the concentration of O2 and other nutrients in the cells. Such quantities are normally so difficult to measure that the doctor is forced to accept the second-class measurements of blood flow and changes in blood volume, which usually correlate with concentration of nutrients. If blood flow is difficult...

A general framework for image segmentation is presented in this paper, based on the paradigm of water flow. The major water flow attributes like water pressure, surface tension and capillary force are defined in the context of force field generation and make the model adaptable to topological and geometrical changes. A flow-stopping image functional combining edgeand region-based forces is intr...