Three known active methods of detuning rf coils have been tested by determining the efficiency of uncoupling two concentric transmit surface coils in a double-coil probe. In a comparison at 80 MHz, the method based on the use of lambda/4 cables was found to have advantages. These methods utilize the
Elimination of coupling between cylindrical transmit coils and surface-receive coils for in vivo NMR
β Scribed by M. Robin Bendall; Alan Connelly; Jamie M. McKendry
- Publisher
- John Wiley and Sons
- Year
- 1986
- Tongue
- English
- Weight
- 538 KB
- Volume
- 3
- Category
- Article
- ISSN
- 0740-3194
No coin nor oath required. For personal study only.
β¦ Synopsis
Coupling between large transmit and surface-receive coils is eliminated using a lambda/4 cable, terminated with crossed diodes to ground, inserted between the receive coil and ground, and by using a cable of length a little less than lambda/2 inserted between the transmit match capacitance and the normal crossed diodes in the transmit input line.
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