## Abstract A formalism for the calculation of fields generated by current distributions on hyperbolic surfaces of revolution is presented and used to generate designs for shielded gradient coils. One application is the development of small, insertable coils suitable for head imaging while allowing
On the electrodynamics of coil shielding
β Scribed by D. Schieber
- Publisher
- Elsevier Science
- Year
- 1982
- Tongue
- English
- Weight
- 535 KB
- Volume
- 314
- Category
- Article
- ISSN
- 0016-0032
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β¦ Synopsis
Coil shielding is resorted to in many electronic applications in order to prevent undesirable coupling. The paper deals with such a shield and the results obtained may be used as an indication of the overall field pattern as established due to the presence of an external screen.
π SIMILAR VOLUMES
## 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
## 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
## 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 applie