## Abstract Techniques are described for the design of shielded gradient coils for superconducting MRI systems. These design methods are suited for constructing the most efficient gradient coil that meets a specified homogeneity requirement. Tradeoffs in coil design of efficiency with coil size and
Examples of the design of screened and shielded RF receiver coils
β Scribed by Michael Burl; Ian R. Young
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- English
- Weight
- 460 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0740-3194
No coin nor oath required. For personal study only.
β¦ Synopsis
Abstract
Three methods of screening RF surface coil receivers are discussed. The aim is to design coils with very much greater sensitivity on one side than on the other so that signal and noise contributions from unwanted regions of the body can be minimized. These methods can usefully be applied to situations wherein data are only wanted from one leg, although the coil is most conveniently located between the two, or from an arm lying adjacent to the body.
π SIMILAR VOLUMES
## Abstract Microcontrollerβbased circuitry was built and tested for automatically tuning flexible RF receiver coils at the touch of a button. This circuitry is robust to 10% changes in probe center frequency, is in line with the scanner, and requires less than 1 s to tune a simple probe. Images we
## Abstract Alternate expressions for the current density on the shielding surface of a gradient coil are derived for cylindrical, planar, and hyperbolic gradient coils. For the planar and hyperbolic geometries, these expressions allow more rapid highβprecision calculations of current densities tha
The design of packaged and ESD protected RF front-end circuits for UHF receiver working at ISM band is presented. By extensively evaluating the effects of the package and ESD parasitics on the LNA input impedance, transconductance, and noise figure, some useful guidelines on the design of inductivel