In this study, we describe a method to obtain improved preamplifier decoupling for receive-only coils. The method relies on the better decoupling obtained when coils are matched to an impedance higher than 50 . Preamplifiers with inductive imaginary impedance and low real impedance, increase the effectiveness of the decoupling. A 2-channel 13C array of 50 mm loop coils show an increase of Q-factor of the coils from 247 to 365. The measured SNR, using two small phantoms, demonstrated a similar improvement.
|Number of pages||3|
|Publication status||Published - 2017|
|Event|| ISMRM 25th Annual Meeting & Exhibition - Hawai'i Convention Center, Honolulu, United States|
Duration: 22 Apr 2017 → 27 Apr 2017
|Conference|| ISMRM 25th Annual Meeting & Exhibition|
|Location||Hawai'i Convention Center|
|Period||22/04/2017 → 27/04/2017|
Sanchez, J. D.
, Johansen, D. H., Hansen, R. B.
, Hansen, E. S., Laustsen, C., Zhurbenko, V., & Ardenkjær-Larsen, J. H.
(2017). Improved Decoupling for 13C coil Arrays Using Non-Conventional Matching and Preamplifier Impedance
. Abstract from ISMRM 25th Annual Meeting & Exhibition, Honolulu, United States.