Abstract #3636

DETECTION OF MR SIGNAL DURING RF EXCITATION USING FULL DUPLEX RADIO SYSTEM

Maryam Salim^1,2, Ali Caglar Ozen³, Michael Bock³, and Ergin Atalar^1,2

¹Electrical and Electronics Engineering Department, Bilkent University, Ankara, Turkey, ²National Magnetic Resonance Research Center (UMRAM), Bilkent University, Ankara, Turkey, ³Department of Radiology - Medical Physics, University Medical Center Freiburg, Freiburg, Germany

In this work, we demonstrated feasibility of MRI with concurrent excitation and acquisition (CEA) using our decoupling method which is potentially useful for MRI of tissues with ultra-short T2*. We have used the concepts used in the full-duplex radio system to suppress the Tx signal coupled on the Rx coil. We could achieve up to 100 dB decoupling between Tx and Rx coils using the cancellation circuit. 3D pulse radial scan was conducted using CEA. Deconvolved MR signal response from a rubber phantom and image of it in coronal slice orientation is demonstrated as the feasibility of the proposed method.

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