PURPOSE To develop an in-vivo imaging method for the measurement of dorsal-root-ganglia-(DRG) perfusion, to establish its normal values in patients without known peripheral nerve disorders or radicular pain syndromes and to determine the physiological spatial perfusion pattern within the DRG. METHODS This prospective study was approved by the institutional ethics committee and written informe...

OBJECTIVE Permeability parameters from dynamic contrast-enhanced MRI (DCE-MRI) and apparent diffusion coefficient (ADC) value on diffusion-weighted imaging (DWI) can be quantitative physiologic metrics for gliomas. The transfer constant (K(trans)) has shown efficacy in grading gliomas. Volume fraction of extravascular extracellular space (ve) has been underutilized to grade gliomas. The purpose...

Purpose – The purpose of this paper is to create a model of role-based access control (RBAC) based access control for virtual enterprise (VE). Design/methodology/approach – An access control model for security and management of VE is presented by integrating generic structure of VE and applying the principles of RBAC. In addition, the application of the model to a supply chain-oriented VE illus...

QUESTION What is the diagnostic value of provocative wrist tests and magnetic resonance imaging (MRI) for suspected wrist ligament injuries? DESIGN Cross-sectional study. PARTICIPANTS 105 people presenting to hand clinics with wrist pain and suspected wrist ligament injuries were evaluated prospectively. OUTCOME MEASURES The integrity of wrist ligaments was tested with seven provocative t...

Agricultural crop residues (e.g., straw and stover) are a current focus for bioenergy feedstocks, with new technologies being developed to improve the economics of bioenergy production. Among the emerging technologies focused on feedstock engineering is the selective harvest concept. Due to the complexity of the biomass separations required for addressing the challenges and requirements of sele...

In this paper, using the Value Efficiency in DEA pattern by taking decisive obtain. Generally, non-radial model of VE and use proper weight to reduce input and output gain are the appropriate pattern. This paper introduces a multi-objective linear programming problem and efficiency determines the value of inefficient units. Use interactive methods to solve MOLP proposed and applied. In conclusi...

Virtual Reality (VR) techniques are used to create computer-simulated environments which enable new forms of cultural entertainment. One critical problem is how to design the 3D virtual environments (VE) and what methods should be used for interaction, in order to offer an entertaining experience in an open approach. This paper focuses on the added value of gaming methods for 3D reconstruction ...