Background: Recent pre-clinical and clinical studies indicate that irradiation in the dose range of 15 to 30 Gy can reduce rate of restenosis in patients who have undergone an angioplasty. The use of filled balloon with radioactive solution was proposed as one of the possible intravascular irradiation techniques. Materials and Methods: The Monte Carlo N-particle Transport Code (MCNP4b) was used...

SUMMARY Numerical simulation of fluid-structure interaction (FSI) in the arterial system is a challenging and time consuming procedure because of the intrinsic heterogeneous nature of the problem. Moreover, in patient-specific simulations, modeling of the vascular structure requires parameter identification still difficult to accomplish. On the other hand, new imaging devices provide time seque...

There are many different tasks which are to be solved on a sea vessel on the base of the primary information from radar stations (RSs) about moving objects in the vessel surrounding. Frequently enough such information is being entered from several RSs with different characteristics. The redundancy of informational flows is used for achieving many positive effects, for example for increasing the...

Based on a modelling technique to calculate the thermal influence of a single vessel segment, a combination of segments representing a vessel tree is presented. At segment junctions the blood temperature is passed with a correction for a single vessel artefact. Blood leaving the modelled arterial vessel network at a junction or at the end of a terminal branch need not be equilibrated with the l...

background: autoregulation of blood flow is a marvelous phenomenon balanc- ing blood supply and tissue demand. although many chemically-based explanations for this phenomenon have been proposed and some of them are commonly used today, biomechanical aspects of this phenomenon was neglected. the biomechanical aspect provides insights to us to model vessel diameter changes more precisely and comp...