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Abstract #2774

A Novel Four-Channel Phased Array Coil with a Special Shield for Cardiac Functional Imaging

Dasong Zhu1, Yuki Mori1, Yoshichika Yoshioka1

1Biofunctional Imaging Lab, Immunology Frontier Research Center, Osaka University, Suita, Osaka, Japan

MRI is playing an increasingly important role in the evaluation of cardiovascular disease. How to improve signal-to-noise rate (SNR) of cardiac imaging is one of the important factors for cardiovascular research. Usually Transmit/receive arrays are used in the 1.5T, 3T and 7T MRI for decreasing RF inhomogeneities and increasing SNR. Strengthening the effect of transmitting radio frequent(RF) can improve SNR under the ruled specific absorption rate(SAR). In this work, a novel shield circuit is proposed to strengthen transmitting magnetic field(B1) and we got much higher SNR from our experiment results.

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Keywords

absorption acceleration achieve achieved adopt amplifiers array arrays become body bottom cardiac cardiovascular channel channels circuit circuits coil coils combined commercial comparing composed conditions confirms copper cover decreasing design developed disease effective enough evaluated evaluation experiment field foam fourth frequency frontier functional future homogeneity human immunology important improve improved increasing increasingly inductance inductor inhomogeneities issues japan kind king layer length lied made material metal middle much noise novel optimize parts phantom pictures placed playing proposed pulse quality radio receive respectively role ruled shield special strength strengthen strengthening stronger system tapes transmit transmitted transmitter transmitting true upside usually utilized wave waves