## Abstract A modified crossover surface coil with minimal B~1~ field penetration was used for collection of skin phosphorus NMR spectra. Projection imaging experiments show that the coilsensitive volume is uniform at the phosphorus frequency, but strikingly nonuniform at s the proton frequency. Ex
The crossover surface coil: an efficient in vivo nmr detector
β Scribed by Timothy L. Nagel; Jacob A. Stolk; Donald W. Alderman; Robin Schoenborn; Martin P. Schweizer
- Publisher
- John Wiley and Sons
- Year
- 1990
- Tongue
- English
- Weight
- 486 KB
- Volume
- 13
- Category
- Article
- ISSN
- 0740-3194
No coin nor oath required. For personal study only.
β¦ Synopsis
Abstract
The crossover surface coil is constructed with two turns of copper foil using a unique transposition construction which incorporates an explicit center tap ground of the widened bottom layer. The coil reduces dielectric and inductive losses by effective shielding of electric fields and uniform distribution of magnetic fields for minimum Q losses upon loading of the coil. Flexible, copper foil construction permits easy conformation to tissues of interest, enhancing coil performance. Construction details of the crossover coil and Q data for coils of various sizes operating at a number of frequencies are given.
π SIMILAR VOLUMES
## Abstract A study was performed to determine whether an implanted, inductively coupled nuclear magnetic resonance (NMR) imaging spine coil could provide a significant gain in signalβtoβnoise ratio (SNR) on images of the spinal cord relative to the SNR of optimized surface coils. Implanted coils w