Conference paper
Improved Decoupling for 13C coil Arrays Using Non-Conventional Matching and Preamplifier Impedance
Center for Hyperpolarization in Magnetic Resonance, Centers, Technical University of Denmark1
Department of Electrical Engineering, Technical University of Denmark2
Center for Magnetic Resonance, Department of Electrical Engineering, Technical University of Denmark3
Electromagnetic Systems, Department of Electrical Engineering, Technical University of Denmark4
Aarhus University5
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.
Language: | English |
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Year: | 2017 |
Proceedings: | ISMRM 25th Annual Meeting & Exhibition |
Types: | Conference paper |
ORCIDs: | Sanchez, Juan Diego , Johansen, Daniel Højrup , Hansen, Rie Beck , Zhurbenko, Vitaliy and Ardenkjær-Larsen, Jan Henrik |