Improved Decoupling for 13C coil Arrays Using Non-Conventional Matching and Preamplifier Impedance

Juan Diego Sanchez, Daniel Højrup Johansen, Rie Beck Hansen, Esben S. Hansen, Christoffer Laustsen, Vitaliy Zhurbenko, Jan Henrik Ardenkjær-Larsen

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Abstract

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.
Original languageEnglish
Publication date2017
Number of pages3
Publication statusPublished - 2017
Event ISMRM 25th Annual Meeting & Exhibition - Hawai'i Convention Center, Honolulu, United States
Duration: 22 Apr 201727 Apr 2017

Conference

Conference ISMRM 25th Annual Meeting & Exhibition
LocationHawai'i Convention Center
CountryUnited States
CityHonolulu
Period22/04/201727/04/2017

Bibliographical note

http://indexsmart.mirasmart.com/ISMRM2017/PDFfiles/2711.html

Cite this

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.