Application of copper plates for frequency tuning of surface wired and wireless MRI coils

Gulyaev, M.V.; Pavlova, O.S.; Volkov, D.V.; Sadykhov, E.G.; Anisimov, N.V.; Pirogov, Y.A.

Информация о цитировании статьи получена из Web of Science, Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 20 декабря 2019 г.

Авторы: Gulyaev Mikhail V., Pavlova Olga S., Volkov Dmitry V., Sadykhov Elnur G., Anisimov Nikolay V., Pirogov Yury A.
Журнал: Journal of Magnetic Resonance
Том: 309
Год издания: 2019
Издательство: Academic Press
Местоположение издательства: United States
Первая страница: 1
Последняя страница: 8
Номер статьи: 106626
DOI: 10.1016/j.jmr.2019.106626
Аннотация: This study shows how a copper plate could be used for frequency tuning of surface wired and wireless MRI coils. For this purpose, it is proposed to place the copper plate directly on their conducting circuit. This leads to increase in the resonance frequency of coils. The effect is most perceptible if the copper plate is comparable in size to the conducting circuit of radiofrequency (RF) coil. The experimental work was performed on a 7.05 T MR scanner using surface MRI coils operating on different resonance frequencies: 1H (300 MHz), 31P (121 MHz), 23Na (79 MHz), 13C (75 MHz). Application of copper plate for frequency tuning of wireless multi-turn multi-gap transmission line resonator (MTMG-TLR) was considered for the first time. The proposed method can be claimed if the nominal variable inductance or capacitance is not enough for tuning the resonance frequency of the MRI coil to a higher frequency range.
Добавил в систему: Павлова Ольга Сергеевна

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