Compact, Cylindrical, Distributed-Current, Transverse-Gradient Coils for Use in MRI
✍ Scribed by D.G. Hughes; R. Teshima; Q. Liu; P.S. Allen
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 159 KB
- Volume
- 110
- Category
- Article
- ISSN
- 1064-1866
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✦ Synopsis
Conventional cylindrical, distributed-current, transverse-gradisessing the same field. The utilization efficiency of the bore ent coils used in MRI occupy the entire surface of the cylinder. volume is therefore a significant economic issue.
Since the two transverse-gradient coils, x and y, must be rigidly
The purpose of the present paper is to report transversesupported and electrically isolated from one another, they occupy gradient coil designs which allow both (x and y) transversea significant amount of space in the radial direction, with a consegradient coils to be located on the same cylindrical surface, quent reduction in the utilization efficiency of the magnet bore thereby saving space while at the same time facilitating convolume. In this work, transverse-gradient coil designs which allow struction.
both x and y coils to be located on the same cylindrical surface are studied. One design in particular is shown to generate a gradi-THEORETICAL CONSIDERATIONS ent which is as linear as that generated by a conventional distributed-current gradient coil over a sphere whose radius is 60% of Although it will always be possible to design active the radius of the cylinder.