B1 gradient coherence selection using a tapered stripline

B1-Gradient Based MRI Using a Multi-Element Transmit System

Introduction: Spatial signal encoding in MRI is usually performed via B0-gradients. An alternative method is the use of B1-gradients (so-called RF encoding), already suggested in the early days of MR (see, e.g., [1-3]). RF encoding offers the possibility to omit all B0-gradients, which would allow for MR scanning more or less free of acoustic noise. This advantage might be counterbalanced by lo...

Tapered Head Gradient Coil Design Using the Wave Equation Method

Introduction: Gradient coil design for specific purposes has been the focus of much recent research [1-4]. The aim is to produce gradient coils that have large imaging regions, high field strengths and low associated torque [5]. Although many different approaches exist for the design of gradient coils, the process can be tedious and time consuming, which is generally independent of the design m...

Surface-resistance measurements using superconducting stripline resonators.

We present a method to measure the absolute surface resistance of conductive samples at a set of GHz frequencies with superconducting lead stripline resonators at temperatures 1-6 K. The stripline structure can easily be applied for bulk samples and allows direct calculation of the surface resistance without the requirement of additional calibration measurements or sample reference points. We f...

A New Model for Text Coherence Evaluation using Statistical Characteristics

Supplier Selection Using a DEA-TOPSIS Method

  Supplier selection is one of the critical activities for firms to gain competitive advantage and achieve the objectives of the whole supply chain. In this paper based on a DEA-TOPSIS method for MADM problems a flexible strategy for supplier selection is introduced