TY  - JOUR
AU  - Hong, Suk-Min
AU  - Choi, Chang-Hoon
AU  - Shah, N Jon
AU  - Felder, Jörg
TI  - Design and evaluation of a 1 H/ 31 P double-resonant helmet coil for 3T MRI of the brain
JO  - Physics in medicine and biology
VL  - 64
IS  - 3
SN  - 1361-6560
CY  - Bristol
PB  - IOP Publ.
M1  - FZJ-2019-03018
SP  - 035003 -
PY  - 2019
AB  - Proton magnetic resonance imaging (MRI) can be combined with signals from non-proton nuclei (X-nuclei) to provide metabolic information. Double-resonant coils are often used for X-nuclei MR studies where the proton element is employed for scout imaging and B 0 shimming. This work describes the development of a new double-resonant coil capable of operating at both proton and X-nuclei frequencies.The proposed design extends the wheel-and-spoke coil, which allows for quadrature drive, by adding an extra ring outside the coil to achieve double-resonance. Furthermore, in order to maximise SNR by increasing the filling factor, the shape of the coil has been modified to a helmet style making it suitable for brain applications.The performance of the double-resonant helmet coil was evaluated by simulation and MR measurements. The helmet coil was successfully tuned to the 1H/31P resonance frequencies of a 3T MR scanner, with high isolation between the two quadrature ports. MR measurements of a phantom were carried out, and the averaged sensitivity of the double-resonant helmet coil over the whole phantom was found to be higher than that of the conventional double-tuned birdcage coil at both frequencies.
LB  - PUB:(DE-HGF)16
C6  - pmid:30566926
UR  - <Go to ISI:>//WOS:000456840500002
DO  - DOI:10.1088/1361-6560/aaf9e2
UR  - https://juser.fz-juelich.de/record/862799
ER  -